diff options
| -rw-r--r-- | sha3.c | 372 | ||||
| -rw-r--r-- | sha3.h | 21 |
2 files changed, 383 insertions, 10 deletions
@@ -1,10 +1,11 @@ // -// Run self-tests: +// FIPS202 (SHA-3) implementation. // -// cc -W -Wall -Wextra -Werror -pedantic -std=c2x -O3 -march=native -mtune=native -mavx -mavx2 -msse2 -msse -mavx512f -std=c11 -DSHA3_TEST % && ./a.out +#include <stdbool.h> // true, false #include <stdint.h> // uint64_t #include <string.h> // memcpy() +#include "sha3.h" // 64-bit rotate left #define ROL(v, n) (((v) << (n)) | ((v) >> (64-(n)))) @@ -143,12 +144,7 @@ static inline void permute(uint64_t a[static 25]) { } } -typedef union { - uint8_t u8[200]; - uint64_t u64[25]; -} state_t; - -static inline size_t keccak(state_t * const a, const uint8_t *m, size_t m_len, const size_t rate) { +static inline size_t keccak(sha3_state_t * const a, const uint8_t *m, size_t m_len, const size_t rate) { while (m_len >= rate) { // absorb u64-sized chunks for (size_t i = 0; i < rate / sizeof(uint64_t); i++) { @@ -182,7 +178,7 @@ static inline void sha3(const uint8_t *m, size_t m_len, uint8_t * const dst, con // capacity const size_t rate = 200 - 2 * dst_len; - state_t a = { .u64 = { 0 } }; + sha3_state_t a = { .u64 = { 0 } }; const size_t len = keccak(&a, m, m_len, rate); @@ -220,7 +216,7 @@ static inline void shake(const uint8_t *m, size_t m_len, uint8_t * const dst, co // capacity const size_t rate = 200 - 2 * dst_len; - state_t a = { .u64 = { 0 } }; + sha3_state_t a = { .u64 = { 0 } }; const size_t len = keccak(&a, m, m_len, rate); @@ -244,6 +240,103 @@ void shake256(const uint8_t *m, size_t m_len, uint8_t dst[static 32]) { shake(m, m_len, dst, 32); } +static inline void xof_init(sha3_xof_t * const xof) { + memset(xof, 0, sizeof(sha3_xof_t)); +} + +static inline _Bool xof_absorb(sha3_xof_t * const xof, const size_t rate, const uint8_t *m, size_t m_len) { + // check state + if (xof->squeezing) { + return false; + } + + // absorb bytes + // (TODO: absorb larger chunks) + for (size_t i = 0; i < m_len; i++) { + xof->a.u8[xof->num_bytes++] ^= m[i]; + if (xof->num_bytes == rate) { + permute(xof->a.u64); + xof->num_bytes = 0; + } + } + + // return success + return true; +} + +static inline _Bool xof_absorb_done(sha3_xof_t * const xof, const size_t rate) { + // check state + if (xof->squeezing) { + return false; + } + + // append suffix (s6.2) and padding + // (note: suffix and padding are ambiguous in spec) + xof->a.u8[xof->num_bytes] ^= 0x1f; + xof->a.u8[rate - 1] ^= 0x80; + + // permute, switch to squeeze mode + permute(xof->a.u64); + xof->num_bytes = 0; + xof->squeezing = true; + + // return success + return true; +} + +static inline _Bool xof_squeeze(sha3_xof_t * const xof, const size_t rate, uint8_t * const dst, const size_t dst_len) { + // check state + if (!xof->squeezing) { + return false; + } + + for (size_t i = 0; i < dst_len; i++) { + dst[i] = xof->a.u8[xof->num_bytes++]; + if (xof->num_bytes == rate) { + permute(xof->a.u64); + xof->num_bytes = 0; + } + } + + // return success + return true; +} + +#define SHAKE128_XOF_RATE (200 - 2 * 16) + +void shake128_xof_init(sha3_xof_t * const xof) { + xof_init(xof); +} + +_Bool shake128_xof_absorb(sha3_xof_t * const xof, const uint8_t * const m, const size_t len) { + return xof_absorb(xof, SHAKE128_XOF_RATE, m, len); +} + +_Bool shake128_xof_absorb_done(sha3_xof_t * const xof) { + return xof_absorb_done(xof, SHAKE128_XOF_RATE); +} + +_Bool shake128_xof_squeeze(sha3_xof_t * const xof, uint8_t * const dst, const size_t dst_len) { + return xof_squeeze(xof, SHAKE128_XOF_RATE, dst, dst_len); +} + +#define SHAKE256_XOF_RATE (200 - 2 * 32) + +void shake256_xof_init(sha3_xof_t * const xof) { + xof_init(xof); +} + +_Bool shake256_xof_absorb(sha3_xof_t * const xof, const uint8_t * const m, const size_t len) { + return xof_absorb(xof, SHAKE256_XOF_RATE, m, len); +} + +_Bool shake256_xof_absorb_done(sha3_xof_t * const xof) { + return xof_absorb_done(xof, SHAKE256_XOF_RATE); +} + +_Bool shake256_xof_squeeze(sha3_xof_t * const xof, uint8_t * const dst, const size_t dst_len) { + return xof_squeeze(xof, SHAKE256_XOF_RATE, dst, dst_len); +} #ifdef SHA3_TEST #include <stdio.h> // printf() @@ -1157,6 +1250,263 @@ static void test_shake256(void) { } } +static void test_shake128_xof(void) { + static const struct { + const char *name; // test name + const uint8_t msg[256]; // test message + const size_t len; // test message length + const uint8_t exp[16]; // expected hash + } tests[] = {{ + .name = "empty", + .msg = "", + .len = 0, + .exp = { + 0x7f, 0x9c, 0x2b, 0xa4, 0xe8, 0x8f, 0x82, 0x7d, + 0x61, 0x60, 0x45, 0x50, 0x76, 0x05, 0x85, 0x3e, + }, + }, { + .name = "asdf", + .msg = "asdf", + .len = 4, + .exp = { + 0xef, 0x02, 0x2c, 0xc5, 0x3c, 0x74, 0xb3, 0x28, + 0x43, 0xf9, 0xc1, 0xf1, 0x14, 0x13, 0xd5, 0x9c, + }, + }, { + .name = "a-134", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 134, + .exp = { + 0xc8, 0x73, 0x5e, 0x5f, 0x6f, 0x15, 0xaf, 0xe5, + 0x1a, 0x8c, 0x3b, 0x07, 0xc4, 0xc6, 0x8d, 0x86, + }, + }, { + .name = "a-135", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 135, + .exp = { + 0xa5, 0xe2, 0xb2, 0x27, 0x8d, 0x1b, 0x75, 0x86, + 0x6c, 0x78, 0x77, 0xa0, 0xff, 0xa2, 0x47, 0x37, + }, + }, { + .name = "a-136", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 136, + .exp = { + 0x0d, 0x01, 0x58, 0xd4, 0x46, 0x78, 0x3a, 0x9b, + 0x18, 0xa6, 0x90, 0x8c, 0x08, 0xbb, 0x5d, 0xe6, + }, + }, { + .name = "ff-256", + .msg = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + }, + .len = 256, + .exp = { + 0xf3, 0x06, 0x93, 0x04, 0x16, 0x5c, 0x0e, 0xad, + 0x13, 0x25, 0xb5, 0x26, 0x76, 0x05, 0x95, 0xed, + }, + }, { + .name = "a-210", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 210, + .exp = { + 0xb1, 0xb4, 0xf3, 0xad, 0x3a, 0x1f, 0x67, 0x60, + 0xe3, 0x08, 0x67, 0xdd, 0x71, 0xb3, 0x49, 0xfa, + }, + }}; + + for (size_t i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) { + for (size_t len = 1; len < tests[i].len; len++) { + // init xof + sha3_xof_t xof; + shake128_xof_init(&xof); + + // absorb + for (size_t ofs = 0; ofs < tests[i].len; ofs += len) { + const size_t absorb_len = (tests[i].len - ofs < len) ? tests[i].len - ofs : len; + if (!shake128_xof_absorb(&xof, tests[i].msg + ofs, absorb_len)) { + fprintf(stderr, "test_shake128_xof(\"%s\", %zu) failed: shake128_xof_absorb()\n", tests[i].name, len); + return; + } + } + + // finish absorbing + if (!shake128_xof_absorb_done(&xof)) { + fprintf(stderr, "test_shake128_xof(\"%s\", %zu) failed: shake128_xof_absorb_done()\n", tests[i].name, len); + return; + } + + // squeeze + uint8_t got[16] = { 0 }; + if (!shake128_xof_squeeze(&xof, got, sizeof(got))) { + fprintf(stderr, "test_shake128_xof(\"%s\", %zu) failed: shake128_xof_squeeze()\n", tests[i].name, len); + return; + } + + // check + if (memcmp(got, tests[i].exp, sizeof(got))) { + fprintf(stderr, "test_shake128_xof(\"%s\", %zu) failed, got:\n", tests[i].name, len); + dump_hex(stderr, got, 16); + + fprintf(stderr, "exp:\n"); + dump_hex(stderr, tests[i].exp, 16); + } + } + } +} + +static void test_shake256_xof(void) { + static const struct { + const char *name; // test name + const uint8_t msg[256]; // test message + const size_t len; // test message length + const uint8_t exp[32]; // expected hash + } tests[] = {{ + .name = "empty", + .msg = "", + .len = 0, + .exp = { + 0x46, 0xb9, 0xdd, 0x2b, 0x0b, 0xa8, 0x8d, 0x13, + 0x23, 0x3b, 0x3f, 0xeb, 0x74, 0x3e, 0xeb, 0x24, + 0x3f, 0xcd, 0x52, 0xea, 0x62, 0xb8, 0x1b, 0x82, + 0xb5, 0x0c, 0x27, 0x64, 0x6e, 0xd5, 0x76, 0x2f, + }, + }, { + .name = "asdf", + .msg = "asdf", + .len = 4, + .exp = { + 0xf0, 0x0c, 0x15, 0x64, 0x33, 0x96, 0x61, 0x6a, + 0x89, 0xa0, 0xcb, 0x79, 0x03, 0x9f, 0x74, 0x05, + 0x75, 0xde, 0xfe, 0x9d, 0xbe, 0x30, 0x7c, 0xcc, + 0xda, 0xf8, 0xae, 0x21, 0x0e, 0x1c, 0x9c, 0xc6, + }, + }, { + .name = "a-134", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 134, + .exp = { + 0xf1, 0xe0, 0x3f, 0x37, 0x8e, 0xb7, 0x79, 0x04, + 0xba, 0x15, 0xbb, 0x64, 0x2a, 0x84, 0xb9, 0x0d, + 0xe5, 0x2e, 0x29, 0x3e, 0xaf, 0xc2, 0x7c, 0xef, + 0x05, 0x88, 0x3b, 0x16, 0x56, 0xae, 0xc3, 0x41, + }, + }, { + .name = "a-135", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 135, + .exp = { + 0x55, 0xb9, 0x91, 0xec, 0xe1, 0xe5, 0x67, 0xb6, + 0xe7, 0xc2, 0xc7, 0x14, 0x44, 0x4d, 0xd2, 0x01, + 0xcd, 0x51, 0xf4, 0xf3, 0x83, 0x2d, 0x08, 0xe1, + 0xd2, 0x6b, 0xeb, 0xc6, 0x3e, 0x07, 0xa3, 0xd7, + }, + }, { + .name = "a-136", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 136, + .exp = { + 0x8f, 0xcc, 0x5a, 0x08, 0xf0, 0xa1, 0xf6, 0x82, + 0x7c, 0x9c, 0xf6, 0x4e, 0xe8, 0xd1, 0x6e, 0x04, + 0x43, 0x10, 0x63, 0x59, 0xca, 0x6c, 0x8e, 0xfd, + 0x23, 0x07, 0x59, 0x25, 0x6f, 0x44, 0x99, 0x6a, + }, + }, { + .name = "ff-256", + .msg = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + }, + .len = 256, + .exp = { + 0x3f, 0x25, 0xdf, 0x0e, 0x37, 0x17, 0x14, 0xdf, + 0xb0, 0xcc, 0x3d, 0x96, 0x17, 0xe1, 0xa0, 0x71, + 0x75, 0xa0, 0xf0, 0x84, 0xc7, 0x00, 0x29, 0x23, + 0x5c, 0x72, 0x7c, 0x5a, 0x68, 0x5e, 0xf0, 0x14, + }, + }, { + .name = "a-210", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 210, + .exp = { + 0xc9, 0xe2, 0xd9, 0x58, 0xf2, 0xdd, 0x3d, 0x97, + 0x53, 0x8a, 0x1b, 0xac, 0x1b, 0x4e, 0xb3, 0x2e, + 0x28, 0x23, 0x6b, 0x5d, 0xfc, 0xe0, 0x29, 0xfc, + 0xc8, 0x73, 0xc0, 0xf2, 0x70, 0xe1, 0x3e, 0x9f, + }, + }}; + + for (size_t i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) { + for (size_t len = 1; len < tests[i].len; len++) { + // init xof + sha3_xof_t xof; + shake256_xof_init(&xof); + + // absorb + for (size_t ofs = 0; ofs < tests[i].len; ofs += len) { + const size_t absorb_len = (tests[i].len - ofs < len) ? tests[i].len - ofs : len; + if (!shake256_xof_absorb(&xof, tests[i].msg + ofs, absorb_len)) { + fprintf(stderr, "test_shake256_xof(\"%s\", %zu) failed: shake256_xof_absorb()\n", tests[i].name, len); + return; + } + } + + // finish absorbing + if (!shake256_xof_absorb_done(&xof)) { + fprintf(stderr, "test_shake256_xof(\"%s\", %zu) failed: shake256_xof_absorb_done()\n", tests[i].name, len); + return; + } + + // squeeze + uint8_t got[32] = { 0 }; + if (!shake256_xof_squeeze(&xof, got, sizeof(got))) { + fprintf(stderr, "test_shake256_xof(\"%s\", %zu) failed: shake256_xof_squeeze()\n", tests[i].name, len); + return; + } + + // check + if (memcmp(got, tests[i].exp, sizeof(got))) { + fprintf(stderr, "test_shake256_xof(\"%s\", %zu) failed, got:\n", tests[i].name, len); + dump_hex(stderr, got, 16); + + fprintf(stderr, "exp:\n"); + dump_hex(stderr, tests[i].exp, 16); + } + } + } +} + + int main(void) { test_theta(); test_rho(); @@ -1170,6 +1520,8 @@ int main(void) { test_sha3_512(); test_shake128(); test_shake256(); + test_shake128_xof(); + test_shake256_xof(); printf("ok\n"); } @@ -7,6 +7,17 @@ extern "C" { #include <stdint.h> +typedef union { + uint8_t u8[200]; + uint64_t u64[25]; +} sha3_state_t; + +typedef struct { + size_t num_bytes; + sha3_state_t a; + _Bool squeezing; +} sha3_xof_t; + void sha3_224(const uint8_t *m, size_t m_len, uint8_t dst[static 28]); void sha3_256(const uint8_t *m, size_t m_len, uint8_t dst[static 32]); void sha3_384(const uint8_t *m, size_t m_len, uint8_t dst[static 48]); @@ -15,6 +26,16 @@ void sha3_512(const uint8_t *m, size_t m_len, uint8_t dst[static 64]); void shake128(const uint8_t *m, size_t m_len, uint8_t dst[static 16]); void shake256(const uint8_t *m, size_t m_len, uint8_t dst[static 32]); +void shake128_xof_init(sha3_xof_t * const xof); +_Bool shake128_xof_absorb(sha3_xof_t * const xof, const uint8_t * const m, const size_t len); +_Bool shake128_xof_absorb_done(sha3_xof_t * const xof); +_Bool shake128_xof_squeeze(sha3_xof_t * const xof, uint8_t * const dst, const size_t dst_len); + +void shake256_xof_init(sha3_xof_t * const xof); +_Bool shake256_xof_absorb(sha3_xof_t * const xof, const uint8_t * const m, const size_t len); +_Bool shake256_xof_absorb_done(sha3_xof_t * const xof); +_Bool shake256_xof_squeeze(sha3_xof_t * const xof, uint8_t * const dst, const size_t dst_len); + #ifdef __cplusplus } #endif /* __cplusplus */ |