powerpc/crypto/poly1305-p10-glue.c

39 	struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc);
41 	poly1305_core_init(&dctx->h);
42 	dctx->buflen = 0;
43 	dctx->rset = 0;
44 	dctx->sset = false;
49 static unsigned int crypto_poly1305_setdctxkey(struct poly1305_desc_ctx *dctx,
54 	if (unlikely(!dctx->sset)) {
55 		if (!dctx->rset && len >= POLY1305_BLOCK_SIZE) {
56 			struct poly1305_core_key *key = &dctx->core_r;
63 			dctx->rset = 1;
66 			dctx->s[0] = get_unaligned_le32(&inp[0]);
67 			dctx->s[1] = get_unaligned_le32(&inp[4]);
68 			dctx->s[2] = get_unaligned_le32(&inp[8]);
69 			dctx->s[3] = get_unaligned_le32(&inp[12]);
71 			dctx->sset = true;
80 	struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc);
83 	if (unlikely(dctx->buflen)) {
84 		bytes = min(srclen, POLY1305_BLOCK_SIZE - dctx->buflen);
85 		memcpy(dctx->buf + dctx->buflen, src, bytes);
88 		dctx->buflen += bytes;
90 		if (dctx->buflen == POLY1305_BLOCK_SIZE) {
91 			if (likely(!crypto_poly1305_setdctxkey(dctx, dctx->buf,
94 				poly1305_64s(&dctx->h, dctx->buf,
98 			dctx->buflen = 0;
104 		used = crypto_poly1305_setdctxkey(dctx, src, bytes);
111 			poly1305_p10le_4blocks(&dctx->h, src, srclen);
118 			poly1305_64s(&dctx->h, src, POLY1305_BLOCK_SIZE, 1);
126 		dctx->buflen = srclen;
127 		memcpy(dctx->buf, src, srclen);
135 	struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc);
137 	if (unlikely(!dctx->sset))
140 	if ((dctx->buflen)) {
141 		dctx->buf[dctx->buflen++] = 1;
142 		memset(dctx->buf + dctx->buflen, 0,
143 		       POLY1305_BLOCK_SIZE - dctx->buflen);
145 		poly1305_64s(&dctx->h, dctx->buf, POLY1305_BLOCK_SIZE, 0);
147 		dctx->buflen = 0;
150 	poly1305_emit_64(&dctx->h, &dctx->s, dst);