1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
3  * Helper functions for BLAKE2s implementations.
24 	state->f[0] = -1;  in blake2s_set_lastblock()
27 /* Helper functions for BLAKE2s shared by the library and shash APIs */
33 	const size_t fill = BLAKE2S_BLOCK_SIZE - state->buflen;  in __blake2s_update()
38 		memcpy(state->buf + state->buflen, in, fill);  in __blake2s_update()
40 			blake2s_compress_generic(state, state->buf, 1,  in __blake2s_update()
43 			blake2s_compress(state, state->buf, 1,  in __blake2s_update()
45 		state->buflen = 0;  in __blake2s_update()
47 		inlen -= fill;  in __blake2s_update()
53 			blake2s_compress_generic(state, in, nblocks - 1,  in __blake2s_update()
56 			blake2s_compress(state, in, nblocks - 1,  in __blake2s_update()
58 		in += BLAKE2S_BLOCK_SIZE * (nblocks - 1);  in __blake2s_update()
59 		inlen -= BLAKE2S_BLOCK_SIZE * (nblocks - 1);  in __blake2s_update()
61 	memcpy(state->buf + state->buflen, in, inlen);  in __blake2s_update()
62 	state->buflen += inlen;  in __blake2s_update()
66 __blake2s_final(struct blake2s_state *state, u8 *out, bool force_generic)  in __blake2s_final()  argument
69 	memset(state->buf + state->buflen, 0,  in __blake2s_final()
70 	       BLAKE2S_BLOCK_SIZE - state->buflen); /* Padding */  in __blake2s_final()
72 		blake2s_compress_generic(state, state->buf, 1, state->buflen);  in __blake2s_final()
74 		blake2s_compress(state, state->buf, 1, state->buflen);  in __blake2s_final()
75 	cpu_to_le32_array(state->h, ARRAY_SIZE(state->h));  in __blake2s_final()
76 	memcpy(out, state->h, state->outlen);  in __blake2s_final()
79 /* Helper functions for shash implementations of BLAKE2s */
92 		return -EINVAL;  in crypto_blake2s_setkey()
94 	memcpy(tctx->key, key, keylen);  in crypto_blake2s_setkey()
95 	tctx->keylen = keylen;  in crypto_blake2s_setkey()
102 	const struct blake2s_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm);  in crypto_blake2s_init()
104 	unsigned int outlen = crypto_shash_digestsize(desc->tfm);  in crypto_blake2s_init()
106 	__blake2s_init(state, outlen, tctx->key, tctx->keylen);  in crypto_blake2s_init()
120 static inline int crypto_blake2s_final(struct shash_desc *desc, u8 *out,  in crypto_blake2s_final()  argument
125 	__blake2s_final(state, out, force_generic);  in crypto_blake2s_final()