1 // SPDX-License-Identifier: (GPL-2.0-only OR Apache-2.0)
3  * BLAKE2b reference source code package - reference C implementations
9  * - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
10  * - OpenSSL license   : https://www.openssl.org/source/license.html
11  * - Apache 2.0        : https://www.apache.org/licenses/LICENSE-2.0
28 #define BLAKE2B_160_DIGEST_SIZE		(160 / 8)
29 #define BLAKE2B_256_DIGEST_SIZE		(256 / 8)
30 #define BLAKE2B_384_DIGEST_SIZE		(384 / 8)
31 #define BLAKE2B_512_DIGEST_SIZE		(512 / 8)
39 	u64      h[8];
46 static const u64 blake2b_IV[8] = {
54 	{  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15 },
55 	{ 14, 10,  4,  8,  9, 15, 13,  6,  1, 12,  0,  2, 11,  7,  5,  3 },
56 	{ 11,  8, 12,  0,  5,  2, 15, 13, 10, 14,  3,  6,  7,  1,  9,  4 },
57 	{  7,  9,  3,  1, 13, 12, 11, 14,  2,  6,  5, 10,  4,  0, 15,  8 },
58 	{  9,  0,  5,  7,  2,  4, 10, 15, 14,  1, 11, 12,  6,  8,  3, 13 },
59 	{  2, 12,  6, 10,  0, 11,  8,  3,  4, 13,  7,  5, 15, 14,  1,  9 },
60 	{ 12,  5,  1, 15, 14, 13,  4, 10,  0,  7,  6,  3,  9,  2,  8, 11 },
61 	{ 13, 11,  7, 14, 12,  1,  3,  9,  5,  0, 15,  4,  8,  6,  2, 10 },
62 	{  6, 15, 14,  9, 11,  3,  0,  8, 12,  2, 13,  7,  1,  4, 10,  5 },
63 	{ 10,  2,  8,  4,  7,  6,  1,  5, 15, 11,  9, 14,  3, 12, 13,  0 },
64 	{  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15 },
65 	{ 14, 10,  4,  8,  9, 15, 13,  6,  1, 12,  0,  2, 11,  7,  5,  3 }
70 	S->t[0] += inc;  in blake2b_increment_counter()
71 	S->t[1] += (S->t[0] < inc);  in blake2b_increment_counter()
80 		a = a + b + m[blake2b_sigma[r][2*i+1]]; \
88 		G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
89 		G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
90 		G(r,2,v[ 2],v[ 6],v[10],v[14]); \
91 		G(r,3,v[ 3],v[ 7],v[11],v[15]); \
92 		G(r,4,v[ 0],v[ 5],v[10],v[15]); \
93 		G(r,5,v[ 1],v[ 6],v[11],v[12]); \
94 		G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
95 		G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
102 	u64 v[16];  in blake2b_compress()  local
108 	for (i = 0; i < 8; ++i)  in blake2b_compress()
109 		v[i] = S->h[i];  in blake2b_compress()
111 	v[ 8] = blake2b_IV[0];  in blake2b_compress()
112 	v[ 9] = blake2b_IV[1];  in blake2b_compress()
113 	v[10] = blake2b_IV[2];  in blake2b_compress()
114 	v[11] = blake2b_IV[3];  in blake2b_compress()
115 	v[12] = blake2b_IV[4] ^ S->t[0];  in blake2b_compress()
116 	v[13] = blake2b_IV[5] ^ S->t[1];  in blake2b_compress()
117 	v[14] = blake2b_IV[6] ^ S->f[0];  in blake2b_compress()
118 	v[15] = blake2b_IV[7] ^ S->f[1];  in blake2b_compress()
121 	ROUND(1);  in blake2b_compress()
128 	ROUND(8);  in blake2b_compress()
135 	for (i = 0; i < 8; ++i)  in blake2b_compress()
136 		S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];  in blake2b_compress()
153 		return -EINVAL;  in blake2b_setkey()
155 	memcpy(tctx->key, key, keylen);  in blake2b_setkey()
156 	tctx->keylen = keylen;  in blake2b_setkey()
163 	struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm);  in blake2b_init()
165 	const int digestsize = crypto_shash_digestsize(desc->tfm);  in blake2b_init()
168 	memcpy(state->h, blake2b_IV, sizeof(state->h));  in blake2b_init()
170 	/* Parameter block is all zeros except index 0, no xor for 1..7 */  in blake2b_init()
171 	state->h[0] ^= 0x01010000 | tctx->keylen << 8 | digestsize;  in blake2b_init()
173 	if (tctx->keylen) {  in blake2b_init()
178 		memcpy(state->buf, tctx->key, tctx->keylen);  in blake2b_init()
179 		state->buflen = BLAKE2B_BLOCKBYTES;  in blake2b_init()
188 	const size_t left = state->buflen;  in blake2b_update()
189 	const size_t fill = BLAKE2B_BLOCKBYTES - left;  in blake2b_update()
195 		state->buflen = 0;  in blake2b_update()
197 		memcpy(state->buf + left, in, fill);  in blake2b_update()
200 		blake2b_compress(state, state->buf);  in blake2b_update()
202 		inlen -= fill;  in blake2b_update()
207 			inlen -= BLAKE2B_BLOCKBYTES;  in blake2b_update()
210 	memcpy(state->buf + state->buflen, in, inlen);  in blake2b_update()
211 	state->buflen += inlen;  in blake2b_update()
219 	const int digestsize = crypto_shash_digestsize(desc->tfm);  in blake2b_final()
222 	blake2b_increment_counter(state, state->buflen);  in blake2b_final()
224 	state->f[0] = (u64)-1;  in blake2b_final()
226 	memset(state->buf + state->buflen, 0, BLAKE2B_BLOCKBYTES - state->buflen);  in blake2b_final()
227 	blake2b_compress(state, state->buf);  in blake2b_final()
230 	for (i = 0; i < ARRAY_SIZE(state->h); i++)  in blake2b_final()
231 		__cpu_to_le64s(&state->h[i]);  in blake2b_final()
233 	memcpy(out, state->h, digestsize);  in blake2b_final()
239 		.base.cra_name		= "blake2b-160",
240 		.base.cra_driver_name	= "blake2b-160-generic",
253 		.base.cra_name		= "blake2b-256",
254 		.base.cra_driver_name	= "blake2b-256-generic",
267 		.base.cra_name		= "blake2b-384",
268 		.base.cra_driver_name	= "blake2b-384-generic",
281 		.base.cra_name		= "blake2b-512",
282 		.base.cra_driver_name	= "blake2b-512-generic",
313 MODULE_ALIAS_CRYPTO("blake2b-160");
314 MODULE_ALIAS_CRYPTO("blake2b-160-generic");
315 MODULE_ALIAS_CRYPTO("blake2b-256");
316 MODULE_ALIAS_CRYPTO("blake2b-256-generic");
317 MODULE_ALIAS_CRYPTO("blake2b-384");
318 MODULE_ALIAS_CRYPTO("blake2b-384-generic");
319 MODULE_ALIAS_CRYPTO("blake2b-512");
320 MODULE_ALIAS_CRYPTO("blake2b-512-generic");