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Support CBC-MAC and its variants #281
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parent
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commit
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391
cbcmac/cbcmac.go
Normal file
391
cbcmac/cbcmac.go
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@ -0,0 +1,391 @@
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// Package cbcmac implements the Message Authentication Code with the block chipher mechanisms.
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package cbcmac
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import (
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"crypto/cipher"
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"github.com/emmansun/gmsm/internal/subtle"
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"github.com/emmansun/gmsm/padding"
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)
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// Reference: GB/T 15821.1-2020 Security techniques - Message authentication codes - Part 1: Mechanisms using block ciphers
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// BockCipherMAC is the interface that wraps the basic MAC method.
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type BockCipherMAC interface {
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// Size returns the MAC value's number of bytes.
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Size() int
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// MAC calculates the MAC of the given data.
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// The MAC value's number of bytes is returned by Size.
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// Intercept message authentication code as needed.
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MAC(src []byte) []byte
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}
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// cbcmac implements the basic CBC-MAC mode of operation for block ciphers.
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type cbcmac struct {
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b cipher.Block
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pad padding.Padding
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size int
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}
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// NewCBCMAC returns a CBC-MAC instance that implements the MAC with the given block cipher.
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// The padding scheme is ISO/IEC 9797-1 method 2.
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// GB/T 15821.1-2020 MAC scheme 1
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func NewCBCMAC(b cipher.Block, size int) BockCipherMAC {
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if size <= 0 || size > b.BlockSize() {
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panic("cbcmac: invalid size")
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}
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return &cbcmac{b: b, pad: padding.NewISO9797M2Padding(uint(b.BlockSize())), size: size}
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}
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// Size returns the size of the MAC.
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// The returned value is the same as the block size of the block cipher.
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func (c *cbcmac) Size() int {
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return c.size
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}
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// MAC calculates the MAC of the given data.
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// The data is padded with the padding scheme of the block cipher before processing.
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func (c *cbcmac) MAC(src []byte) []byte {
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src = c.pad.Pad(src)
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blockSize := c.b.BlockSize()
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tag := make([]byte, blockSize)
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for len(src) > 0 {
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subtle.XORBytes(tag, tag, src[:blockSize])
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c.b.Encrypt(tag, tag)
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src = src[blockSize:]
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}
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return tag[:c.size]
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}
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// emac implements the EMAC mode of operation for block ciphers.
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type emac struct {
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pad padding.Padding
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b1, b2 cipher.Block
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size int
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}
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// NewEMAC returns an EMAC instance that implements MAC with the given block cipher.
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// The padding scheme is ISO/IEC 9797-1 method 2.
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// GB/T 15821.1-2020 MAC scheme 2
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func NewEMAC(creator func(key []byte) (cipher.Block, error), key1, key2 []byte, size int) BockCipherMAC {
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var b1, b2 cipher.Block
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var err error
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if b1, err = creator(key1); err != nil {
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panic(err)
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}
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if size <= 0 || size > b1.BlockSize() {
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panic("cbcmac: invalid size")
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}
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if b2, err = creator(key2); err != nil {
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panic(err)
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}
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return &emac{pad: padding.NewISO9797M2Padding(uint(b1.BlockSize())), b1: b1, b2: b2, size: size}
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}
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func (e *emac) Size() int {
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return e.size
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}
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func (e *emac) MAC(src []byte) []byte {
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src = e.pad.Pad(src)
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blockSize := e.b1.BlockSize()
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tag := make([]byte, blockSize)
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for len(src) > 0 {
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subtle.XORBytes(tag, tag, src[:blockSize])
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e.b1.Encrypt(tag, tag)
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src = src[blockSize:]
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}
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e.b2.Encrypt(tag, tag)
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return tag[:e.size]
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}
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type ansiRetailMAC emac
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// NewANSIRetailMAC returns an ANSI Retail MAC instance that implements MAC with the given block cipher.
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// The padding scheme is ISO/IEC 9797-1 method 2.
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// GB/T 15821.1-2020 MAC scheme 3
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func NewANSIRetailMAC(creator func(key []byte) (cipher.Block, error), key1, key2 []byte, size int) BockCipherMAC {
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return (*ansiRetailMAC)(NewEMAC(creator, key1, key2, size).(*emac))
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}
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func (e *ansiRetailMAC) Size() int {
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return e.size
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}
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func (e *ansiRetailMAC) MAC(src []byte) []byte {
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src = e.pad.Pad(src)
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blockSize := e.b1.BlockSize()
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tag := make([]byte, blockSize)
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for len(src) > 0 {
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subtle.XORBytes(tag, tag, src[:blockSize])
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e.b1.Encrypt(tag, tag)
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src = src[blockSize:]
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}
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e.b2.Decrypt(tag, tag)
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e.b1.Encrypt(tag, tag)
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return tag[:e.size]
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}
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type macDES struct {
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pad padding.Padding
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b1, b2, b3 cipher.Block
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size int
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}
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// NewMACDES returns a MAC-DES instance that implements MAC with the given block cipher.
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// The padding scheme is ISO/IEC 9797-1 method 2.
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// GB/T 15821.1-2020 MAC scheme 4
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func NewMACDES(creator func(key []byte) (cipher.Block, error), key1, key2 []byte, size int) BockCipherMAC {
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var b1, b2, b3 cipher.Block
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var err error
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if b1, err = creator(key1); err != nil {
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panic(err)
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}
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if size <= 0 || size > b1.BlockSize() {
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panic("cbcmac: invalid size")
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}
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if b2, err = creator(key2); err != nil {
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panic(err)
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}
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key3 := make([]byte, len(key2))
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copy(key3, key2)
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for i := 0; i < len(key3); i++ {
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key3[i] ^= 0xF0
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}
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if b3, err = creator(key3); err != nil {
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panic(err)
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}
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return &macDES{pad: padding.NewISO9797M2Padding(uint(b1.BlockSize())), b1: b1, b2: b2, b3: b3, size: size}
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}
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func (m *macDES) Size() int {
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return m.size
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}
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func (m *macDES) MAC(src []byte) []byte {
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src = m.pad.Pad(src)
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blockSize := m.b1.BlockSize()
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tag := make([]byte, blockSize)
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copy(tag, src[:blockSize])
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m.b1.Encrypt(tag, tag)
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m.b3.Encrypt(tag, tag)
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src = src[blockSize:]
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for len(src) > 0 {
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subtle.XORBytes(tag, tag, src[:blockSize])
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m.b1.Encrypt(tag, tag)
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src = src[blockSize:]
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}
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m.b2.Encrypt(tag, tag)
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return tag[:m.size]
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}
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type cmac struct {
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b cipher.Block
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k1, k2 []byte
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size int
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}
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// NewCMAC returns a CMAC instance that implements MAC with the given block cipher.
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// GB/T 15821.1-2020 MAC scheme 5
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func NewCMAC(b cipher.Block, size int) BockCipherMAC {
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if size <= 0 || size > b.BlockSize() {
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panic("cbcmac: invalid size")
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}
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blockSize := b.BlockSize()
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k1 := make([]byte, blockSize)
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k2 := make([]byte, blockSize)
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b.Encrypt(k1, k1)
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msb := shiftLeft(k1)
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k1[len(k1)-1] ^= msb * 0b10000111
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copy(k2, k1)
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msb = shiftLeft(k2)
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k2[len(k2)-1] ^= msb * 0b10000111
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return &cmac{b: b, k1: k1, k2: k2, size: size}
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}
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func (c *cmac) Size() int {
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return c.size
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}
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func (c *cmac) MAC(src []byte) []byte {
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blockSize := c.b.BlockSize()
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tag := make([]byte, blockSize)
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if len(src) == 0 {
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// Special-cased as a single empty partial final block.
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copy(tag, c.k2)
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tag[len(src)] ^= 0b10000000
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c.b.Encrypt(tag, tag)
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return tag
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}
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for len(src) >= blockSize {
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subtle.XORBytes(tag, src[:blockSize], tag)
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if len(src) == blockSize {
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// Final complete block.
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subtle.XORBytes(tag, c.k1, tag)
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}
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c.b.Encrypt(tag, tag)
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src = src[blockSize:]
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}
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if len(src) > 0 {
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// Final incomplete block.
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subtle.XORBytes(tag, src, tag)
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subtle.XORBytes(tag, c.k2, tag)
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tag[len(src)] ^= 0b10000000
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c.b.Encrypt(tag, tag)
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}
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return tag[:c.size]
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}
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// shiftLeft sets x to x << 1, and returns MSB₁(x).
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func shiftLeft(x []byte) byte {
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var msb byte
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for i := len(x) - 1; i >= 0; i-- {
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msb, x[i] = x[i]>>7, x[i]<<1|msb
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}
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return msb
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}
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type lmac struct {
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b1, b2 cipher.Block
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pad padding.Padding
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size int
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}
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// NewLMAC returns an LMAC instance that implements MAC with the given block cipher.
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// GB/T 15821.1-2020 MAC scheme 6
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func NewLMAC(creator func(key []byte) (cipher.Block, error), key []byte, size int) BockCipherMAC {
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var b, b1, b2 cipher.Block
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var err error
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if b, err = creator(key); err != nil {
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panic(err)
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}
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if size <= 0 || size > b.BlockSize() {
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panic("cbcmac: invalid size")
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}
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blockSize := b.BlockSize()
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key1 := make([]byte, blockSize)
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key1[blockSize-1] = 0x01
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key2 := make([]byte, blockSize)
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key2[blockSize-1] = 0x02
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b.Encrypt(key1, key1)
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b.Encrypt(key2, key2)
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if b1, err = creator(key1); err != nil {
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panic(err)
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}
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if b2, err = creator(key2); err != nil {
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panic(err)
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}
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return &lmac{b1: b1, b2: b2, pad: padding.NewISO9797M2Padding(uint(blockSize)), size: size}
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}
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func (l *lmac) Size() int {
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return l.b1.BlockSize()
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}
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func (l *lmac) MAC(src []byte) []byte {
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src = l.pad.Pad(src)
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blockSize := l.b1.BlockSize()
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tag := make([]byte, blockSize)
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for len(src) > blockSize {
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subtle.XORBytes(tag, tag, src[:blockSize])
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l.b1.Encrypt(tag, tag)
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src = src[blockSize:]
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}
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subtle.XORBytes(tag, tag, src[:blockSize])
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l.b2.Encrypt(tag, tag)
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return tag
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}
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type trCBCMAC struct {
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b cipher.Block
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size int
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}
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// NewTRCBCMAC returns a TR-CBC-MAC instance that implements MAC with the given block cipher.
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// GB/T 15821.1-2020 MAC scheme 7
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func NewTRCBCMAC(b cipher.Block, size int) BockCipherMAC {
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if size <= 0 || size > b.BlockSize() {
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panic("cbcmac: invalid size")
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}
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return &trCBCMAC{b: b, size: size}
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}
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func (t *trCBCMAC) Size() int {
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return t.size
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}
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func (t *trCBCMAC) MAC(src []byte) []byte {
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blockSize := t.b.BlockSize()
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tag := make([]byte, blockSize)
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padded := false
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if len(src) == 0 || len(src)%blockSize != 0 {
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pad := padding.NewISO9797M2Padding(uint(blockSize))
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src = pad.Pad(src)
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padded = true
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}
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for len(src) > 0 {
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subtle.XORBytes(tag, tag, src[:blockSize])
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t.b.Encrypt(tag, tag)
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src = src[blockSize:]
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}
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if padded {
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return tag[blockSize-t.size:]
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}
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return tag[:t.size]
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}
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type cbcrMAC struct {
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b cipher.Block
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size int
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}
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// NewCBCRMAC returns a CBCRMAC instance that implements MAC with the given block cipher.
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// GB/T 15821.1-2020 MAC scheme 8
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func NewCBCRMAC(b cipher.Block, size int) BockCipherMAC {
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if size <= 0 || size > b.BlockSize() {
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panic("cbcmac: invalid size")
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}
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return &cbcrMAC{b: b, size: size}
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}
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func (c *cbcrMAC) Size() int {
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return c.size
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}
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func (c *cbcrMAC) MAC(src []byte) []byte {
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blockSize := c.b.BlockSize()
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tag := make([]byte, blockSize)
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c.b.Encrypt(tag, tag)
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padded := false
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if len(src) == 0 || len(src)%blockSize != 0 {
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pad := padding.NewISO9797M2Padding(uint(blockSize))
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src = pad.Pad(src)
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padded = true
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}
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for len(src) > blockSize {
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subtle.XORBytes(tag, tag, src[:blockSize])
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c.b.Encrypt(tag, tag)
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src = src[blockSize:]
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}
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subtle.XORBytes(tag, tag, src[:blockSize])
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if padded {
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shiftLeft(tag)
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} else {
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shiftRight(tag)
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}
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c.b.Encrypt(tag, tag)
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return tag[:c.size]
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}
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func shiftRight(x []byte) {
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var lsb byte
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for i := 0; i < len(x); i++ {
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lsb, x[i] = x[i]<<7, x[i]>>1|lsb
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}
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x[0] ^= lsb
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}
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256
cbcmac/cbcmac_test.go
Normal file
256
cbcmac/cbcmac_test.go
Normal file
@ -0,0 +1,256 @@
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package cbcmac
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import (
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"bytes"
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"testing"
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"github.com/emmansun/gmsm/sm4"
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)
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func TestCBCMAC(t *testing.T) {
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// Test vectors from GB/T 15821.1-2020 Appendix B.
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cases := []struct {
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key []byte
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src []byte
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tag []byte
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}{
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{
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[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
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[]byte("This is the test message for mac"),
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[]byte{0x4b, 0x65, 0x53, 0xaf, 0x3c, 0x4e, 0x27, 0x44, 0x84, 0x12, 0x31, 0x5a, 0xc7, 0x84, 0x95, 0x35},
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},
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{
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[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
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[]byte("This is the test message "),
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[]byte{0x42, 0x1a, 0xd1, 0x69, 0x0a, 0xa1, 0x52, 0xe2, 0x84, 0x6f, 0xa2, 0xa5, 0xd8, 0x34, 0x45, 0xa9},
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},
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}
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for i, c := range cases {
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block, err := sm4.NewCipher(c.key)
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if err != nil {
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t.Errorf("#%d: failed to create cipher: %v", i, err)
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}
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mac := NewCBCMAC(block, len(c.tag))
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tag := mac.MAC(c.src)
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if !bytes.Equal(tag, c.tag) {
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t.Errorf("#%d: expect tag %x, got %x", i, c.tag, tag)
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}
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}
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}
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func TestEMAC(t *testing.T) {
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// Test vectors from GB/T 15821.1-2020 Appendix B.
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cases := []struct {
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key1 []byte
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key2 []byte
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src []byte
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tag []byte
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}{
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{
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[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
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[]byte{0x41, 0x49, 0xd2, 0xad, 0xed, 0x94, 0x56, 0x68, 0x1e, 0xc8, 0xb5, 0x11, 0xd9, 0xe7, 0xee, 0x04},
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[]byte("This is the test message for mac"),
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[]byte{0xe4, 0x23, 0xe3, 0x55, 0x99, 0xaf, 0xd9, 0x48, 0xae, 0xc5, 0x0b, 0xde, 0xe8, 0x38, 0xe9, 0xea},
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},
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{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte{0x41, 0x49, 0xd2, 0xad, 0xed, 0x94, 0x56, 0x68, 0x1e, 0xc8, 0xb5, 0x11, 0xd9, 0xe7, 0xee, 0x04},
|
||||
[]byte("This is the test message "),
|
||||
[]byte{0xf0, 0x26, 0x25, 0xce, 0xad, 0x00, 0x8d, 0x4e, 0xfb, 0xf3, 0xf0, 0xb2, 0xb0, 0xc2, 0xa7, 0x5b},
|
||||
},
|
||||
}
|
||||
|
||||
for i, c := range cases {
|
||||
mac := NewEMAC(sm4.NewCipher, c.key1, c.key2, len(c.tag))
|
||||
tag := mac.MAC(c.src)
|
||||
if !bytes.Equal(tag, c.tag) {
|
||||
t.Errorf("#%d: expect tag %x, got %x", i, c.tag, tag)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestANSIRetailMAC(t *testing.T) {
|
||||
// Test vectors from GB/T 15821.1-2020 Appendix B.
|
||||
cases := []struct {
|
||||
key1 []byte
|
||||
key2 []byte
|
||||
src []byte
|
||||
tag []byte
|
||||
}{
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte{0x41, 0x49, 0xd2, 0xad, 0xed, 0x94, 0x56, 0x68, 0x1e, 0xc8, 0xb5, 0x11, 0xd9, 0xe7, 0xee, 0x04},
|
||||
[]byte("This is the test message for mac"),
|
||||
[]byte{0x51, 0xe9, 0x92, 0x8c, 0x22, 0x38, 0x33, 0x0c, 0x32, 0x31, 0xb8, 0x75, 0x2a, 0x9a, 0xfd, 0x7f},
|
||||
},
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte{0x41, 0x49, 0xd2, 0xad, 0xed, 0x94, 0x56, 0x68, 0x1e, 0xc8, 0xb5, 0x11, 0xd9, 0xe7, 0xee, 0x04},
|
||||
[]byte("This is the test message "),
|
||||
[]byte{0x19, 0x72, 0x47, 0x22, 0x9c, 0xe9, 0xd7, 0xb6, 0xae, 0x40, 0x5b, 0xf8, 0x85, 0xb2, 0x70, 0x57},
|
||||
},
|
||||
}
|
||||
|
||||
for i, c := range cases {
|
||||
mac := NewANSIRetailMAC(sm4.NewCipher, c.key1, c.key2, len(c.tag))
|
||||
tag := mac.MAC(c.src)
|
||||
if !bytes.Equal(tag, c.tag) {
|
||||
t.Errorf("#%d: expect tag %x, got %x", i, c.tag, tag)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestMACDES(t *testing.T) {
|
||||
// Test vectors from GB/T 15821.1-2020 Appendix B.
|
||||
cases := []struct {
|
||||
key1 []byte
|
||||
key2 []byte
|
||||
src []byte
|
||||
tag []byte
|
||||
}{
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte{0x41, 0x49, 0xd2, 0xad, 0xed, 0x94, 0x56, 0x68, 0x1e, 0xc8, 0xb5, 0x11, 0xd9, 0xe7, 0xee, 0x04},
|
||||
[]byte("This is the test message for mac"),
|
||||
[]byte{0x7e, 0x1a, 0x9a, 0x5e, 0x0e, 0xf0, 0x94, 0x7f, 0x25, 0xcb, 0x94, 0x85, 0x26, 0x1c, 0x98, 0x5c},
|
||||
},
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte{0x41, 0x49, 0xd2, 0xad, 0xed, 0x94, 0x56, 0x68, 0x1e, 0xc8, 0xb5, 0x11, 0xd9, 0xe7, 0xee, 0x04},
|
||||
[]byte("This is the test message "),
|
||||
[]byte{0x94, 0x94, 0x76, 0xd3, 0x5f, 0x17, 0x26, 0x1e, 0x1f, 0xb8, 0xc4, 0x39, 0x6d, 0x62, 0xdc, 0x05},
|
||||
},
|
||||
}
|
||||
|
||||
for i, c := range cases {
|
||||
mac := NewMACDES(sm4.NewCipher, c.key1, c.key2, 16)
|
||||
tag := mac.MAC(c.src)
|
||||
if !bytes.Equal(tag, c.tag) {
|
||||
t.Errorf("#%d: expect tag %x, got %x", i, c.tag, tag)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestCMAC(t *testing.T) {
|
||||
// Test vectors from GB/T 15821.1-2020 Appendix B.
|
||||
cases := []struct {
|
||||
key []byte
|
||||
src []byte
|
||||
tag []byte
|
||||
}{
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte("This is the test message for mac"),
|
||||
[]byte{0x69, 0x2c, 0x43, 0x71, 0x00, 0xf3, 0xb5, 0xee, 0x2b, 0x8a, 0xbc, 0xef, 0x37, 0x3d, 0x99, 0x0c},
|
||||
},
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte("This is the test message "),
|
||||
[]byte{0x47, 0x38, 0xa6, 0xc7, 0x60, 0xb2, 0x80, 0xfc, 0x0c, 0x8a, 0x8a, 0xf3, 0x88, 0x6e, 0x9f, 0x5d},
|
||||
},
|
||||
}
|
||||
for i, c := range cases {
|
||||
block, err := sm4.NewCipher(c.key)
|
||||
if err != nil {
|
||||
t.Errorf("#%d: failed to create cipher: %v", i, err)
|
||||
}
|
||||
mac := NewCMAC(block, 16)
|
||||
tag := mac.MAC(c.src)
|
||||
if !bytes.Equal(tag, c.tag) {
|
||||
t.Errorf("#%d: expect tag %x, got %x", i, c.tag, tag)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestLMAC(t *testing.T) {
|
||||
// Test vectors from GB/T 15821.1-2020 Appendix B.
|
||||
cases := []struct {
|
||||
key []byte
|
||||
src []byte
|
||||
tag []byte
|
||||
}{
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte("This is the test message for mac"),
|
||||
[]byte{0xa0, 0xc4, 0x65, 0xee, 0x58, 0x96, 0x97, 0x2f, 0x83, 0x37, 0xaa, 0x1f, 0x92, 0xc9, 0x9d, 0x10},
|
||||
},
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte("This is the test message "),
|
||||
[]byte{0x60, 0xdd, 0x95, 0x5e, 0xd0, 0xca, 0x3d, 0x7a, 0x64, 0x22, 0x71, 0x74, 0xdd, 0x98, 0xdd, 0x81},
|
||||
},
|
||||
}
|
||||
|
||||
for i, c := range cases {
|
||||
mac := NewLMAC(sm4.NewCipher, c.key, 16)
|
||||
tag := mac.MAC(c.src)
|
||||
if !bytes.Equal(tag, c.tag) {
|
||||
t.Errorf("#%d: expect tag %x, got %x", i, c.tag, tag)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestTRCBCMAC(t *testing.T) {
|
||||
// Test vectors from GB/T 15821.1-2020 Appendix B.
|
||||
cases := []struct {
|
||||
key []byte
|
||||
src []byte
|
||||
tag []byte
|
||||
}{
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte("This is the test message for mac"),
|
||||
[]byte{0x16, 0xe0, 0x29, 0x04, 0xef, 0xb7, 0x65, 0xb7},
|
||||
},
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte("This is the test message "),
|
||||
[]byte{0x84, 0x6f, 0xa2, 0xa5, 0xd8, 0x34, 0x45, 0xa9},
|
||||
},
|
||||
}
|
||||
|
||||
for i, c := range cases {
|
||||
block, err := sm4.NewCipher(c.key)
|
||||
if err != nil {
|
||||
t.Errorf("#%d: failed to create cipher: %v", i, err)
|
||||
}
|
||||
mac := NewTRCBCMAC(block, len(c.tag))
|
||||
tag := mac.MAC(c.src)
|
||||
if !bytes.Equal(tag, c.tag) {
|
||||
t.Errorf("#%d: expect tag %x, got %x", i, c.tag, tag)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestCBCRMAC(t *testing.T) {
|
||||
// Test vectors from GB/T 15821.1-2020 Appendix B.
|
||||
cases := []struct {
|
||||
key []byte
|
||||
src []byte
|
||||
tag []byte
|
||||
}{
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte("This is the test message for mac"),
|
||||
[]byte{0xe4, 0x0e, 0xd7, 0x9c, 0x31, 0x49, 0xa1, 0xc9, 0xd4, 0x2f, 0x04, 0xc4, 0x23, 0x04, 0x99, 0x35},
|
||||
},
|
||||
{
|
||||
[]byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
|
||||
[]byte("This is the test message "),
|
||||
[]byte{0xa9, 0x9d, 0x13, 0x01, 0x3e, 0x89, 0x2e, 0xe2, 0xc2, 0x5b, 0xe2, 0xda, 0xaa, 0x6c, 0x82, 0xe8},
|
||||
},
|
||||
}
|
||||
|
||||
for i, c := range cases {
|
||||
block, err := sm4.NewCipher(c.key)
|
||||
if err != nil {
|
||||
t.Errorf("#%d: failed to create cipher: %v", i, err)
|
||||
}
|
||||
mac := NewCBCRMAC(block, 16)
|
||||
tag := mac.MAC(c.src)
|
||||
if !bytes.Equal(tag, c.tag) {
|
||||
t.Errorf("#%d: expect tag %x, got %x", i, c.tag, tag)
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user