Add incremental API for shake128 and shake256
This commit is contained in:
Joost Rijneveld
parent
7a36262f6a
commit
23178c4c32
151
common/fips202.c
151
common/fips202.c
@ -402,6 +402,157 @@ static void keccak_squeezeblocks(uint8_t *h, size_t nblocks,
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}
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}
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/*************************************************
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* Name: keccak_inc_init
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*
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* Description: Initializes the incremental Keccak state to zero.
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*
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* Arguments: - uint64_t *s_inc: pointer to input/output incremental state
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* First 25 values represent Keccak state.
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* 26th value represents either the number of absorbed bytes
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* that have not been permuted, or not-yet-squeezed bytes.
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**************************************************/
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static void keccak_inc_init(uint64_t *s_inc) {
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size_t i;
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for (i = 0; i < 25; ++i) {
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s_inc[i] = 0;
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}
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s_inc[25] = 0;
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}
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/*************************************************
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* Name: keccak_inc_absorb
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*
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* Description: Incremental keccak absorb
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* Preceded by keccak_inc_init, succeeded by keccak_inc_finalize
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*
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* Arguments: - uint64_t *s_inc: pointer to input/output incremental state
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* First 25 values represent Keccak state.
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* 26th value represents either the number of absorbed bytes
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* that have not been permuted, or not-yet-squeezed bytes.
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* - uint32_t r: rate in bytes (e.g., 168 for SHAKE128)
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* - const uint8_t *m: pointer to input to be absorbed into s
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* - size_t mlen: length of input in bytes
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**************************************************/
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static void keccak_inc_absorb(uint64_t *s_inc, uint32_t r, const uint8_t *m,
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size_t mlen) {
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size_t i;
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/* Recall that s_inc[25] is the non-absorbed bytes xored into the state */
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while (mlen + s_inc[25] >= r) {
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for (i = 0; i < r - s_inc[25]; i++) {
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/* Take the i'th byte from message
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xor with the s_inc[25] + i'th byte of the state; little-endian */
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s_inc[(s_inc[25] + i) >> 3] ^= (uint64_t)m[i] << (8 * ((s_inc[25] + i) & 0x07));
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}
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mlen -= (size_t)(r - s_inc[25]);
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m += r - s_inc[25];
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s_inc[25] = 0;
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KeccakF1600_StatePermute(s_inc);
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}
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for (i = 0; i < mlen; i++) {
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s_inc[(s_inc[25] + i) >> 3] ^= (uint64_t)m[i] << (8 * ((s_inc[25] + i) & 0x07));
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}
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s_inc[25] += mlen;
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}
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/*************************************************
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* Name: keccak_inc_finalize
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*
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* Description: Finalizes Keccak absorb phase, prepares for squeezing
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*
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* Arguments: - uint64_t *s_inc: pointer to input/output incremental state
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* First 25 values represent Keccak state.
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* 26th value represents either the number of absorbed bytes
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* that have not been permuted, or not-yet-squeezed bytes.
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* - uint32_t r: rate in bytes (e.g., 168 for SHAKE128)
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* - uint8_t p: domain-separation byte for different
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* Keccak-derived functions
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**************************************************/
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static void keccak_inc_finalize(uint64_t *s_inc, uint32_t r, uint8_t p) {
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/* After keccak_inc_absorb, we are guaranteed that s_inc[25] < r,
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so we can always use one more byte for p in the current state. */
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s_inc[s_inc[25] >> 3] ^= (uint64_t)p << (8 * (s_inc[25] & 0x07));
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s_inc[(r - 1) >> 3] ^= (uint64_t)128 << (8 * ((r - 1) & 0x07));
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s_inc[25] = 0;
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}
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/*************************************************
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* Name: keccak_inc_squeeze
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*
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* Description: Incremental Keccak squeeze; can be called on byte-level
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*
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* Arguments: - uint8_t *h: pointer to output bytes
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* - size_t outlen: number of bytes to be squeezed
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* - uint64_t *s_inc: pointer to input/output incremental state
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* First 25 values represent Keccak state.
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* 26th value represents either the number of absorbed bytes
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* that have not been permuted, or not-yet-squeezed bytes.
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* - uint32_t r: rate in bytes (e.g., 168 for SHAKE128)
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**************************************************/
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static void keccak_inc_squeeze(uint8_t *h, size_t outlen,
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uint64_t *s_inc, uint32_t r) {
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size_t i;
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/* First consume any bytes we still have sitting around */
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for (i = 0; i < outlen && i < s_inc[25]; i++) {
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/* There are s_inc[25] bytes left, so r - s_inc[25] is the first
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available byte. We consume from there, i.e., up to r. */
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h[i] = (uint8_t)(s_inc[(r - s_inc[25] + i) >> 3] >> (8 * ((r - s_inc[25] + i) & 0x07)));
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}
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h += i;
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outlen -= i;
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s_inc[25] -= i;
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/* Then squeeze the remaining necessary blocks */
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while (outlen > 0) {
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KeccakF1600_StatePermute(s_inc);
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for (i = 0; i < outlen && i < r; i++) {
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h[i] = (uint8_t)(s_inc[i >> 3] >> (8 * (i & 0x07)));
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}
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h += i;
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outlen -= i;
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s_inc[25] = r - i;
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}
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}
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void shake128_inc_init(uint64_t *s_inc) {
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keccak_inc_init(s_inc);
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}
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void shake128_inc_absorb(uint64_t *s_inc, const uint8_t *input, size_t inlen) {
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keccak_inc_absorb(s_inc, SHAKE128_RATE, input, inlen);
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}
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void shake128_inc_finalize(uint64_t *s_inc) {
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keccak_inc_finalize(s_inc, SHAKE128_RATE, 0x1F);
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}
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void shake128_inc_squeeze(uint8_t *output, size_t outlen, uint64_t *s_inc) {
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keccak_inc_squeeze(output, outlen, s_inc, SHAKE128_RATE);
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}
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void shake256_inc_init(uint64_t *s_inc) {
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keccak_inc_init(s_inc);
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}
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void shake256_inc_absorb(uint64_t *s_inc, const uint8_t *input, size_t inlen) {
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keccak_inc_absorb(s_inc, SHAKE256_RATE, input, inlen);
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}
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void shake256_inc_finalize(uint64_t *s_inc) {
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keccak_inc_finalize(s_inc, SHAKE256_RATE, 0x1F);
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}
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void shake256_inc_squeeze(uint8_t *output, size_t outlen, uint64_t *s_inc) {
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keccak_inc_squeeze(output, outlen, s_inc, SHAKE256_RATE);
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}
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/*************************************************
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* Name: shake128_absorb
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*
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@ -13,10 +13,19 @@ void shake128_absorb(uint64_t *s, const uint8_t *input, size_t inlen);
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void shake128_squeezeblocks(uint8_t *output, size_t nblocks, uint64_t *s);
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void shake256_absorb(uint64_t *s, const uint8_t *input, size_t inlen);
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void shake128_inc_init(uint64_t *s_inc);
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void shake128_inc_absorb(uint64_t *s_inc, const uint8_t *input, size_t inlen);
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void shake128_inc_finalize(uint64_t *s_inc);
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void shake128_inc_squeeze(uint8_t *output, size_t outlen, uint64_t *s_inc);
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void shake256_absorb(uint64_t *s, const uint8_t *input, size_t inlen);
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void shake256_squeezeblocks(uint8_t *output, size_t nblocks, uint64_t *s);
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void shake256_inc_init(uint64_t *s_inc);
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void shake256_inc_absorb(uint64_t *s_inc, const uint8_t *input, size_t inlen);
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void shake256_inc_finalize(uint64_t *s_inc);
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void shake256_inc_squeeze(uint8_t *output, size_t outlen, uint64_t *s_inc);
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void shake128(uint8_t *output, size_t outlen,
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const uint8_t *input, size_t inlen);
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@ -17,7 +17,7 @@ DEST_DIR=../bin
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# This -Wall was supported by the European Commission through the ERC Starting Grant 805031 (EPOQUE)
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CFLAGS=-Wall -Wextra -Wpedantic -Werror -std=c99 -I$(COMMON_DIR) $(EXTRAFLAGS)
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all: $(DEST_DIR)/functest_$(SCHEME)_$(IMPLEMENTATION) $(DEST_DIR)/testvectors_$(SCHEME)_$(IMPLEMENTATION)
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all: $(DEST_DIR)/functest_$(SCHEME)_$(IMPLEMENTATION) $(DEST_DIR)/testvectors_$(SCHEME)_$(IMPLEMENTATION) $(DEST_DIR)/test_fips202
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.PHONY: build-scheme
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build-scheme:
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@ -33,6 +33,10 @@ functest: $(DEST_DIR)/functest_$(SCHEME)_$(IMPLEMENTATION)
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.PHONY: testvectors
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testvectors: $(DEST_DIR)/testvectors_$(SCHEME)_$(IMPLEMENTATION)
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$(DEST_DIR)/test_fips202: common/fips202.c $(COMMON_FILES)
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mkdir -p $(DEST_DIR)
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$(CC) $(CFLAGS) $< $(COMMON_FILES) -o $@
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$(DEST_DIR)/functest_$(SCHEME)_$(IMPLEMENTATION): build-scheme crypto_$(TYPE)/functest.c $(COMMON_FILES) $(COMMON_DIR)/randombytes.c $(COMMON_HEADERS)
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mkdir -p $(DEST_DIR)
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$(CC) $(CFLAGS) -DPQCLEAN_NAMESPACE=PQCLEAN_$(SCHEME_UPPERCASE)_$(IMPLEMENTATION_UPPERCASE) -I$(SCHEME_DIR) crypto_$(TYPE)/functest.c $(COMMON_FILES) $(COMMON_DIR)/notrandombytes.c -o $@ -L$(SCHEME_DIR) -l$(SCHEME)_$(IMPLEMENTATION)
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@ -45,3 +49,4 @@ $(DEST_DIR)/testvectors_$(SCHEME)_$(IMPLEMENTATION): build-scheme crypto_$(TYPE)
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clean:
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$(RM) $(DEST_DIR)/functest_$(SCHEME)_$(IMPLEMENTATION)
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$(RM) $(DEST_DIR)/testvectors_$(SCHEME)_$(IMPLEMENTATION)
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$(RM) $(DEST_DIR)/test_fips202
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236
test/common/fips202.c
Normal file
236
test/common/fips202.c
Normal file
@ -0,0 +1,236 @@
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#include "fips202.h"
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <inttypes.h>
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const unsigned char plaintext[44] = "The quick brown fox jumps over the lazy dog";
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const unsigned char expected[512] = {
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0xf4, 0x20, 0x2e, 0x3c, 0x58, 0x52, 0xf9, 0x18, 0x2a, 0x04, 0x30, 0xfd,
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0x81, 0x44, 0xf0, 0xa7, 0x4b, 0x95, 0xe7, 0x41, 0x7e, 0xca, 0xe1, 0x7d,
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0xb0, 0xf8, 0xcf, 0xee, 0xd0, 0xe3, 0xe6, 0x6e, 0xb5, 0x58, 0x5e, 0xc6,
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0xf8, 0x60, 0x21, 0xca, 0xcf, 0x27, 0x2c, 0x79, 0x8b, 0xcf, 0x97, 0xd3,
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0x68, 0xb8, 0x86, 0xb1, 0x8f, 0xec, 0x3a, 0x57, 0x1f, 0x09, 0x60, 0x86,
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0xa5, 0x23, 0x71, 0x7a, 0x37, 0x32, 0xd5, 0x0d, 0xb2, 0xb0, 0xb7, 0x99,
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0x8b, 0x41, 0x17, 0xae, 0x66, 0xa7, 0x61, 0xcc, 0xf1, 0x84, 0x7a, 0x16,
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0x16, 0xf4, 0xc0, 0x7d, 0x51, 0x78, 0xd0, 0xd9, 0x65, 0xf9, 0xfe, 0xba,
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0x35, 0x14, 0x20, 0xf8, 0xbf, 0xb6, 0xf5, 0xab, 0x9a, 0x0c, 0xb1, 0x02,
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0x56, 0x8e, 0xab, 0xf3, 0xdf, 0xa4, 0xe2, 0x22, 0x79, 0xf8, 0x08, 0x2d,
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0xce, 0x81, 0x43, 0xeb, 0x78, 0x23, 0x5a, 0x1a, 0x54, 0x91, 0x4a, 0xb7,
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0x1a, 0xbb, 0x07, 0xf2, 0xf3, 0x64, 0x84, 0x68, 0x37, 0x0b, 0x9f, 0xbb,
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0x07, 0x1e, 0x07, 0x4f, 0x1c, 0x03, 0x0a, 0x40, 0x30, 0x22, 0x5f, 0x40,
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0xc3, 0x94, 0x80, 0x33, 0x9f, 0x3d, 0xc7, 0x1d, 0x0f, 0x04, 0xf7, 0x13,
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0x26, 0xde, 0x13, 0x81, 0x67, 0x4c, 0xc8, 0x9e, 0x25, 0x9e, 0x21, 0x99,
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0x27, 0xfa, 0xe8, 0xea, 0x27, 0x99, 0xa0, 0x3d, 0xa8, 0x62, 0xa5, 0x5a,
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0xfa, 0xfe, 0x67, 0x09, 0x57, 0xa2, 0xaf, 0x33, 0x18, 0xd9, 0x19, 0xd0,
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0xa3, 0x35, 0x8f, 0x3b, 0x89, 0x12, 0x36, 0xd6, 0xa8, 0xe8, 0xd1, 0x99,
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0x99, 0xd1, 0x07, 0x6b, 0x52, 0x99, 0x68, 0xfa, 0xef, 0xbd, 0x88, 0x0d,
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0x77, 0xbb, 0x30, 0x08, 0x29, 0xdc, 0xa8, 0x7e, 0x9c, 0x8e, 0x4c, 0x28,
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0xe0, 0x80, 0x0f, 0xf3, 0x74, 0x90, 0xa5, 0xbd, 0x8c, 0x36, 0xc0, 0xb0,
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0xbd, 0xb2, 0x70, 0x1a, 0x5d, 0x58, 0xd0, 0x33, 0x78, 0xb9, 0xdb, 0xd3,
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0x84, 0x38, 0x9e, 0x3e, 0xf0, 0xfd, 0x40, 0x03, 0xb0, 0x89, 0x98, 0xfd,
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0x3f, 0x32, 0xfe, 0x1a, 0x08, 0x10, 0xfc, 0x0e, 0xcc, 0xaa, 0xd9, 0x4b,
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0xca, 0x8d, 0xd8, 0x3b, 0x34, 0x55, 0x9c, 0x33, 0x3f, 0x0b, 0x16, 0xdf,
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0xc2, 0x89, 0x6e, 0xd8, 0x7b, 0x30, 0xba, 0x14, 0xc8, 0x1f, 0x87, 0xcd,
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0x8b, 0x4b, 0xb6, 0x31, 0x7d, 0xb8, 0x9b, 0x0e, 0x7e, 0x94, 0xc0, 0x61,
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0x6f, 0x9a, 0x66, 0x5f, 0xba, 0x5b, 0x0e, 0x6f, 0xb3, 0x54, 0x9c, 0x9d,
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0x7b, 0x68, 0xe6, 0x6d, 0x08, 0xa8, 0x6e, 0xb2, 0xfa, 0xec, 0x05, 0xcc,
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0x46, 0x2a, 0x77, 0x18, 0x06, 0xb9, 0x3c, 0xc3, 0x8b, 0x0a, 0x4f, 0xeb,
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0x99, 0x35, 0xc6, 0xc8, 0x94, 0x5d, 0xa6, 0xa5, 0x89, 0x89, 0x1b, 0xa5,
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0xee, 0x99, 0x75, 0x3c, 0xfd, 0xd3, 0x8e, 0x1a, 0xbc, 0x71, 0x47, 0xfd,
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0x74, 0xb7, 0xc7, 0xd1, 0xce, 0x06, 0x09, 0xb6, 0x68, 0x0a, 0x2e, 0x18,
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0x88, 0x8d, 0x84, 0x94, 0x9b, 0x6e, 0x6c, 0xf6, 0xa2, 0xaa, 0x41, 0x13,
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0x53, 0x5a, 0xae, 0xe0, 0x79, 0x45, 0x9e, 0x3f, 0x25, 0x7b, 0x56, 0x9a,
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0x94, 0x50, 0x52, 0x3c, 0x41, 0xf5, 0xb5, 0xba, 0x4b, 0x79, 0xb3, 0xba,
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0x59, 0x49, 0x14, 0x0a, 0x74, 0xbb, 0x04, 0x8d, 0xe0, 0x65, 0x7d, 0x04,
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0x95, 0x4b, 0xdd, 0x71, 0xda, 0xe7, 0x6f, 0x61, 0xe2, 0xa1, 0xf8, 0x8a,
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0xec, 0xb9, 0x1c, 0xfa, 0x5b, 0x36, 0xc1, 0xbf, 0x33, 0x50, 0xa7, 0x98,
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0xdc, 0x4d, 0xcf, 0x48, 0x62, 0x8e, 0xff, 0xe3, 0xa0, 0xc5, 0x34, 0x0c,
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0x75, 0x6b, 0xd9, 0x22, 0xf7, 0x8d, 0x0e, 0x36, 0xef, 0x7d, 0xf1, 0x2c,
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0xe7, 0x8c, 0x17, 0x9c, 0xc7, 0x21, 0xad, 0x08, 0x7e, 0x15, 0xea, 0x49,
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0x6b, 0xf5, 0xf6, 0x0b, 0x21, 0xb5, 0x82, 0x2d
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};
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static int test_shake128_incremental(void) {
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unsigned char input[512];
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unsigned char check[512];
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unsigned char output[512];
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uint64_t s_inc_absorb[26];
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uint64_t s_inc_squeeze[26];
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uint64_t s_inc_squeeze_all[26];
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uint64_t s_inc_both[26];
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uint64_t s_combined[25];
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int i;
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int absorbed;
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int squeezed;
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int returncode = 0;
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for (i = 0; i < 512; i++) {
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input[i] = i;
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}
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shake128(check, 512, input, 512);
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shake128_inc_init(s_inc_absorb);
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absorbed = 0;
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for (i = 0; i < 512 && absorbed + i <= 512; i++) {
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shake128_inc_absorb(s_inc_absorb, input + absorbed, i);
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absorbed += i;
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}
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shake128_inc_absorb(s_inc_absorb, input + absorbed, 512 - absorbed);
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shake128_inc_finalize(s_inc_absorb);
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shake128_absorb(s_combined, input, 512);
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if (memcmp(s_inc_absorb, s_combined, 25 * sizeof(uint64_t))) {
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printf("ERROR shake128 state after incremental absorb did not match all-at-once absorb.\n");
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printf(" Expected: ");
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for (i = 0; i < 25; i++) {
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printf("%016" PRIx64, s_combined[i]);
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}
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printf("\n");
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printf(" State: ");
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for (i = 0; i < 25; i++) {
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printf("%016" PRIx64, s_inc_absorb[i]);
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}
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printf("\n");
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for (i = 0; i < 8 * 25; i++) {
|
||||
if (((s_combined[i >> 3] >> (8*(i & 0x7))) & 0xFF) !=
|
||||
((s_inc_absorb[i >> 3] >> (8*(i & 0x7))) & 0xFF)) {
|
||||
printf(" First occurred in int %d, byte %d (%02X should be %02X)\n",
|
||||
i >> 3, i & 0x7,
|
||||
(uint8_t)((s_inc_absorb[i >> 3] >> (8*(i & 0x7))) & 0xFF),
|
||||
(uint8_t)((s_combined[i >> 3] >> (8*(i & 0x7))) & 0xFF));
|
||||
break;
|
||||
}
|
||||
}
|
||||
returncode = 1;
|
||||
}
|
||||
|
||||
memcpy(s_inc_both, s_inc_absorb, 26 * sizeof(uint64_t));
|
||||
|
||||
shake128_squeezeblocks(output, 3, s_inc_absorb);
|
||||
|
||||
if (memcmp(check, output, 3*SHAKE128_RATE)) {
|
||||
printf("ERROR shake128 incremental absorb did not match shake128.\n");
|
||||
printf(" Expected: ");
|
||||
for (i = 0; i < 3*SHAKE128_RATE; i++) {
|
||||
printf("%02X", check[i]);
|
||||
}
|
||||
printf("\n");
|
||||
printf(" Received: ");
|
||||
for (i = 0; i < 3*SHAKE128_RATE; i++) {
|
||||
printf("%02X", output[i]);
|
||||
}
|
||||
printf("\n");
|
||||
returncode = 1;
|
||||
}
|
||||
|
||||
shake128_absorb(s_inc_squeeze, input, 512);
|
||||
s_inc_squeeze[25] = 0;
|
||||
|
||||
memcpy(s_inc_squeeze_all, s_inc_squeeze, 26 * sizeof(uint64_t));
|
||||
|
||||
shake128_inc_squeeze(output, 512, s_inc_squeeze_all);
|
||||
|
||||
if (memcmp(check, output, 512)) {
|
||||
printf("ERROR shake128 incremental squeeze-all did not match shake128.\n");
|
||||
printf(" Expected: ");
|
||||
for (i = 0; i < 512; i++) {
|
||||
printf("%02X", check[i]);
|
||||
}
|
||||
printf("\n");
|
||||
printf(" Received: ");
|
||||
for (i = 0; i < 512; i++) {
|
||||
printf("%02X", output[i]);
|
||||
}
|
||||
printf("\n");
|
||||
returncode = 1;
|
||||
}
|
||||
|
||||
squeezed = 0;
|
||||
memset(output, 0, 512);
|
||||
for (i = 0; i < 512 && squeezed + i <= 512; i++) {
|
||||
shake128_inc_squeeze(output + squeezed, i, s_inc_squeeze);
|
||||
squeezed += i;
|
||||
}
|
||||
shake128_inc_squeeze(output + squeezed, 512 - squeezed, s_inc_squeeze);
|
||||
|
||||
if (memcmp(check, output, 512)) {
|
||||
printf("ERROR shake128 incremental squeeze did not match shake128.\n");
|
||||
printf(" Expected: ");
|
||||
for (i = 0; i < 512; i++) {
|
||||
printf("%02X", check[i]);
|
||||
}
|
||||
printf("\n");
|
||||
printf(" Received: ");
|
||||
for (i = 0; i < 512; i++) {
|
||||
printf("%02X", output[i]);
|
||||
}
|
||||
printf("\n");
|
||||
returncode = 1;
|
||||
}
|
||||
|
||||
squeezed = 0;
|
||||
memset(output, 0, 512);
|
||||
for (i = 0; i < 512 && squeezed + i <= 512; i++) {
|
||||
shake128_inc_squeeze(output + squeezed, i, s_inc_both);
|
||||
squeezed += i;
|
||||
}
|
||||
shake128_inc_squeeze(output + squeezed, 512 - squeezed, s_inc_both);
|
||||
|
||||
if (memcmp(check, output, 512)) {
|
||||
printf("ERROR shake128 incremental absorb + squeeze did not match shake128.\n");
|
||||
printf(" Expected: ");
|
||||
for (i = 0; i < 512; i++) {
|
||||
printf("%02X", check[i]);
|
||||
}
|
||||
printf("\n");
|
||||
printf(" Received: ");
|
||||
for (i = 0; i < 512; i++) {
|
||||
printf("%02X", output[i]);
|
||||
}
|
||||
printf("\n");
|
||||
returncode = 1;
|
||||
}
|
||||
|
||||
return returncode;
|
||||
}
|
||||
|
||||
static int test_shake128(void) {
|
||||
unsigned char output[32];
|
||||
int i = 0;
|
||||
|
||||
shake128(output, 32, plaintext, 43);
|
||||
|
||||
if (memcmp(expected, output, 32)) {
|
||||
printf("ERROR shake128 output did not match test vector.\n");
|
||||
printf("Expected: ");
|
||||
for (i = 0; i < 32; i++) {
|
||||
printf("%02X", expected[i]);
|
||||
}
|
||||
printf("\n");
|
||||
printf("Received: ");
|
||||
for (i = 0; i < 32; i++) {
|
||||
printf("%02X", output[i]);
|
||||
}
|
||||
printf("\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int main(void) {
|
||||
int result = 0;
|
||||
result += test_shake128();
|
||||
result += test_shake128_incremental();
|
||||
|
||||
if (result != 0) {
|
||||
puts("Errors occurred");
|
||||
}
|
||||
return result;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user