51 	ret->alg = alg;  in ssh_hmac_start()
52 	if ((ret->ictx = ssh_digest_start(alg)) == NULL ||  in ssh_hmac_start()
53 	    (ret->octx = ssh_digest_start(alg)) == NULL ||  in ssh_hmac_start()
54 	    (ret->digest = ssh_digest_start(alg)) == NULL)  in ssh_hmac_start()
56 	ret->buf_len = ssh_digest_blocksize(ret->ictx);  in ssh_hmac_start()
57 	if ((ret->buf = calloc(1, ret->buf_len)) == NULL)  in ssh_hmac_start()
73 		if (klen <= ctx->buf_len)  in ssh_hmac_init()
74 			memcpy(ctx->buf, key, klen);  in ssh_hmac_init()
75 		else if (ssh_digest_memory(ctx->alg, key, klen, ctx->buf,  in ssh_hmac_init()
76 		    ctx->buf_len) < 0)  in ssh_hmac_init()
77 			return -1;  in ssh_hmac_init()
78 		for (i = 0; i < ctx->buf_len; i++)  in ssh_hmac_init()
79 			ctx->buf[i] ^= 0x36;  in ssh_hmac_init()
80 		if (ssh_digest_update(ctx->ictx, ctx->buf, ctx->buf_len) < 0)  in ssh_hmac_init()
81 			return -1;  in ssh_hmac_init()
82 		for (i = 0; i < ctx->buf_len; i++)  in ssh_hmac_init()
83 			ctx->buf[i] ^= 0x36 ^ 0x5c;  in ssh_hmac_init()
84 		if (ssh_digest_update(ctx->octx, ctx->buf, ctx->buf_len) < 0)  in ssh_hmac_init()
85 			return -1;  in ssh_hmac_init()
86 		explicit_bzero(ctx->buf, ctx->buf_len);  in ssh_hmac_init()
89 	if (ssh_digest_copy_state(ctx->ictx, ctx->digest) < 0)  in ssh_hmac_init()
90 		return -1;  in ssh_hmac_init()
97 	return ssh_digest_update(ctx->digest, m, mlen);  in ssh_hmac_update()
103 	return ssh_digest_update_buffer(ctx->digest, b);  in ssh_hmac_update_buffer()
111 	len = ssh_digest_bytes(ctx->alg);  in ssh_hmac_final()
113 	    ssh_digest_final(ctx->digest, ctx->buf, len))  in ssh_hmac_final()
114 		return -1;  in ssh_hmac_final()
116 	if (ssh_digest_copy_state(ctx->octx, ctx->digest) < 0 ||  in ssh_hmac_final()
117 	    ssh_digest_update(ctx->digest, ctx->buf, len) < 0 ||  in ssh_hmac_final()
118 	    ssh_digest_final(ctx->digest, d, dlen) < 0)  in ssh_hmac_final()
119 		return -1;  in ssh_hmac_final()
127 		ssh_digest_free(ctx->ictx);  in ssh_hmac_free()
128 		ssh_digest_free(ctx->octx);  in ssh_hmac_free()
129 		ssh_digest_free(ctx->digest);  in ssh_hmac_free()
130 		if (ctx->buf) {  in ssh_hmac_free()
131 			explicit_bzero(ctx->buf, ctx->buf_len);  in ssh_hmac_free()
132 			free(ctx->buf);  in ssh_hmac_free()
140 /* cc -DTEST hmac.c digest.c buffer.c cleanup.c fatal.c log.c xmalloc.c -lcrypto */