X-Git-Url: http://the.earth.li/gitweb/?a=blobdiff_plain;f=hash-helper.c;fp=hash-helper.c;h=02b62d93392d91151fc25753e422978718707522;hb=3a9aaa4369f8078b801cddd2353db5730d2388c8;hp=0000000000000000000000000000000000000000;hpb=f281cecfca0f0482461b36b09d077bb39578593d;p=onak.git

diff --git a/hash-helper.c b/hash-helper.c
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+++ b/hash-helper.c
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+/*
+ * hash-helper.c - Helper functions for calculating hashes
+ *
+ * Copyright Jonathan McDowell <noodles@earth.li>
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "build-config.h"
+#include "hash-helper.h"
+#include "onak.h"
+#include "openpgp.h"
+
+onak_status_t onak_hash(struct onak_hash_data *data, uint8_t *hash)
+{
+	struct onak_hash_ctx hash_ctx;
+	int i;
+
+	if (data == NULL) {
+		return ONAK_E_INVALID_PARAM;
+	}
+
+	if (data->chunks > MAX_HASH_CHUNKS) {
+		return ONAK_E_INVALID_PARAM;
+	}
+
+	switch (data->hashtype) {
+	case OPENPGP_HASH_MD5:
+		md5_init(&hash_ctx.md5);
+		for (i = 0; i < data->chunks; i++) {
+			md5_update(&hash_ctx.md5, data->len[i], data->data[i]);
+		}
+		md5_digest(&hash_ctx.md5, MD5_DIGEST_SIZE, hash);
+		break;
+	case OPENPGP_HASH_SHA1:
+		sha1_init(&hash_ctx.sha1);
+		for (i = 0; i < data->chunks; i++) {
+			sha1_update(&hash_ctx.sha1, data->len[i], data->data[i]);
+		}
+		sha1_digest(&hash_ctx.sha1, SHA1_DIGEST_SIZE, hash);
+		break;
+	case OPENPGP_HASH_SHA1X:
+		sha1x_init(&hash_ctx.sha1x);
+		for (i = 0; i < data->chunks; i++) {
+			sha1x_update(&hash_ctx.sha1x, data->len[i], data->data[i]);
+		}
+		sha1x_digest(&hash_ctx.sha1x, SHA1X_DIGEST_SIZE, hash);
+		break;
+#ifdef HAVE_NETTLE
+	case OPENPGP_HASH_RIPEMD160:
+		ripemd160_init(&hash_ctx.ripemd160);
+		for (i = 0; i < data->chunks; i++) {
+			ripemd160_update(&hash_ctx.ripemd160, data->len[i],
+				data->data[i]);
+		}
+		ripemd160_digest(&hash_ctx.ripemd160, RIPEMD160_DIGEST_SIZE,
+			hash);
+		break;
+	case OPENPGP_HASH_SHA224:
+		sha224_init(&hash_ctx.sha224);
+		for (i = 0; i < data->chunks; i++) {
+			sha224_update(&hash_ctx.sha224, data->len[i],
+				data->data[i]);
+		}
+		sha224_digest(&hash_ctx.sha224, SHA224_DIGEST_SIZE, hash);
+		break;
+	case OPENPGP_HASH_SHA256:
+		sha256_init(&hash_ctx.sha256);
+		for (i = 0; i < data->chunks; i++) {
+			sha256_update(&hash_ctx.sha256, data->len[i],
+				data->data[i]);
+		}
+		sha256_digest(&hash_ctx.sha256, SHA256_DIGEST_SIZE, hash);
+		break;
+	case OPENPGP_HASH_SHA384:
+		sha384_init(&hash_ctx.sha384);
+		for (i = 0; i < data->chunks; i++) {
+			sha384_update(&hash_ctx.sha384, data->len[i],
+				data->data[i]);
+		}
+		sha384_digest(&hash_ctx.sha384, SHA384_DIGEST_SIZE, hash);
+		break;
+	case OPENPGP_HASH_SHA512:
+		sha512_init(&hash_ctx.sha512);
+		for (i = 0; i < data->chunks; i++) {
+			sha512_update(&hash_ctx.sha512, data->len[i],
+				data->data[i]);
+		}
+		sha512_digest(&hash_ctx.sha512, SHA512_DIGEST_SIZE, hash);
+		break;
+#endif
+	default:
+		return ONAK_E_UNSUPPORTED_FEATURE;
+	}
+
+	return ONAK_E_OK;
+}