Provide an EVP implementation for ChaCha.

ok miod@

8 files changed, 125 insertions, 0 deletions

diff --git a/lib/libssl/src/crypto/chacha/chacha.c b/lib/libssl/src/crypto/chacha/chacha.c
index d76d64de4ab..1bc95f502d4 100644
--- a/lib/libssl/src/crypto/chacha/chacha.c
+++ b/lib/libssl/src/crypto/chacha/chacha.c
@@ -14,9 +14,29 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "chacha.h"
 #include "chacha-merged.c"
 
 void
+ChaCha_set_key(ChaCha_ctx *ctx, const unsigned char *key, uint32_t keybits)
+{
+	chacha_keysetup((chacha_ctx *)ctx, key, keybits);
+}
+
+void
+ChaCha_set_iv(ChaCha_ctx *ctx, const unsigned char *iv,
+    const unsigned char *counter)
+{
+	chacha_ivsetup((chacha_ctx *)ctx, iv, counter);
+}
+
+void
+ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in, size_t len)
+{
+	chacha_encrypt_bytes((chacha_ctx *)ctx, in, out, (uint32_t)len);
+}
+
+void
 CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len,
     const unsigned char key[32], const unsigned char iv[8], size_t counter)
 {
diff --git a/lib/libssl/src/crypto/chacha/chacha.h b/lib/libssl/src/crypto/chacha/chacha.h
index d66a719ae43..456d960ed9b 100644
--- a/lib/libssl/src/crypto/chacha/chacha.h
+++ b/lib/libssl/src/crypto/chacha/chacha.h
@@ -29,6 +29,17 @@
 extern "C" {
 #endif
 
+typedef struct {
+        unsigned int input[16];
+} ChaCha_ctx;
+
+void ChaCha_set_key(ChaCha_ctx *ctx, const unsigned char *key,
+    unsigned int keybits);
+void ChaCha_set_iv(ChaCha_ctx *ctx, const unsigned char *iv,
+    const unsigned char *counter);
+void ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in,
+    size_t len);
+
 void CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len,
     const unsigned char key[32], const unsigned char iv[8], size_t counter);
 
diff --git a/lib/libssl/src/crypto/evp/c_allc.c b/lib/libssl/src/crypto/evp/c_allc.c
index 2a45d435e58..2047b6cd61c 100644
--- a/lib/libssl/src/crypto/evp/c_allc.c
+++ b/lib/libssl/src/crypto/evp/c_allc.c
@@ -227,4 +227,8 @@ void OpenSSL_add_all_ciphers(void)
 	EVP_add_cipher_alias(SN_camellia_256_cbc,"CAMELLIA256");
 	EVP_add_cipher_alias(SN_camellia_256_cbc,"camellia256");
 #endif
+
+#ifndef OPENSSL_NO_CHACHA
+	EVP_add_cipher(EVP_chacha20());
+#endif
 	}
diff --git a/lib/libssl/src/crypto/evp/e_chacha.c b/lib/libssl/src/crypto/evp/e_chacha.c
new file mode 100644
index 00000000000..4a20186006a
--- /dev/null
+++ b/lib/libssl/src/crypto/evp/e_chacha.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef OPENSSL_NO_CHACHA
+
+#include <openssl/chacha.h>
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+
+#include "evp_locl.h"
+
+static int chacha_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+    const unsigned char *in, size_t len);
+static int chacha_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+    const unsigned char *iv, int enc);
+
+static const EVP_CIPHER chacha20_cipher = {
+	.nid = NID_chacha20,
+	.block_size = 1,
+	.key_len = 32,
+	.iv_len = 8,
+	.flags = EVP_CIPH_STREAM_CIPHER,
+	.init = chacha_init,
+	.do_cipher = chacha_cipher,
+	.ctx_size = sizeof(ChaCha_ctx)
+};
+
+const EVP_CIPHER *
+EVP_chacha20(void)
+{
+	return(&chacha20_cipher);
+}
+
+static int
+chacha_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+    const unsigned char *iv, int enc)
+{
+	ChaCha_set_key((ChaCha_ctx *)ctx->cipher_data, key,
+	    EVP_CIPHER_CTX_key_length(ctx) * 8);
+	ChaCha_set_iv((ChaCha_ctx *)ctx->cipher_data, iv, NULL);
+	return 1;
+}
+
+static int
+chacha_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in,
+    size_t len)
+{
+	ChaCha((ChaCha_ctx *)ctx->cipher_data, out, in, len);
+	return 1;
+}
+
+#endif
diff --git a/lib/libssl/src/crypto/evp/evp.h b/lib/libssl/src/crypto/evp/evp.h
index f43fe33b47d..fa98d4d93c7 100644
--- a/lib/libssl/src/crypto/evp/evp.h
+++ b/lib/libssl/src/crypto/evp/evp.h
@@ -838,6 +838,10 @@ const EVP_CIPHER *EVP_seed_cfb128(void);
 const EVP_CIPHER *EVP_seed_ofb(void);
 #endif
 
+#ifndef OPENSSL_NO_CHACHA
+const EVP_CIPHER *EVP_chacha20(void);
+#endif
+
 void OPENSSL_add_all_algorithms_noconf(void);
 void OPENSSL_add_all_algorithms_conf(void);
 
diff --git a/lib/libssl/src/crypto/objects/objects.txt b/lib/libssl/src/crypto/objects/objects.txt
index 487e0792553..bb44aa77a32 100644
--- a/lib/libssl/src/crypto/objects/objects.txt
+++ b/lib/libssl/src/crypto/objects/objects.txt
@@ -1309,3 +1309,7 @@ brainpool 1 13 : brainpoolP512r1
 brainpool 1 14 : brainpoolP512t1
 
 1 2 250 1 223 101 256 1 : FRP256v1
+
+# ChaCha Stream Cipher
+!Cname chacha20
+			: ChaCha		: chacha
diff --git a/regress/lib/libcrypto/evp/evptest.c b/regress/lib/libcrypto/evp/evptest.c
index 164d8f3e019..de1bcce41d1 100644
--- a/regress/lib/libcrypto/evp/evptest.c
+++ b/regress/lib/libcrypto/evp/evptest.c
@@ -429,6 +429,13 @@ int main(int argc,char **argv)
 		continue;
 		}
 #endif
+#ifdef OPENSSL_NO_CHACHA
+	    if (strstr(cipher, "ChaCha") == cipher)
+		{
+		fprintf(stdout, "Cipher disabled, skipping %s\n", cipher); 
+		continue;
+		}
+#endif
 	    fprintf(stderr,"Can't find %s\n",cipher);
 	    exit(3);
 	    }
diff --git a/regress/lib/libcrypto/evp/evptests.txt b/regress/lib/libcrypto/evp/evptests.txt
index c273707c144..bdee5a88f7e 100644
--- a/regress/lib/libcrypto/evp/evptests.txt
+++ b/regress/lib/libcrypto/evp/evptests.txt
@@ -332,3 +332,13 @@ SEED-ECB:00000000000000000000000000000000::000102030405060708090A0B0C0D0E0F:5EBA
 SEED-ECB:000102030405060708090A0B0C0D0E0F::00000000000000000000000000000000:C11F22F20140505084483597E4370F43:1
 SEED-ECB:4706480851E61BE85D74BFB3FD956185::83A2F8A288641FB9A4E9A5CC2F131C7D:EE54D13EBCAE706D226BC3142CD40D4A:1
 SEED-ECB:28DBC3BC49FFD87DCFA509B11D422BE7::B41E6BE2EBA84A148E2EED84593C5EC7:9B9B7BFCD1813CB95D0B3618F40F5122:1
+
+# ChaCha test vectors
+ChaCha:0000000000000000000000000000000000000000000000000000000000000000:0000000000000000:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000:76b8e0ada0f13d90405d6ae55386bd28bdd219b8a08ded1aa836efcc8b770dc7da41597c5157488d7724e03fb8d84a376a43b8f41518a11cc387b669b2ee6586:1
+ChaCha:0100000000000000000000000000000000000000000000000000000000000000:0000000000000000:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000:c5d30a7ce1ec119378c84f487d775a8542f13ece238a9455e8229e888de85bbd29eb63d0a17a5b999b52da22be4023eb07620a54f6fa6ad8737b71eb0464dac0:1
+ChaCha:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff:ffffffffffffffff:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000:d9bf3f6bce6ed0b54254557767fb57443dd4778911b606055c39cc25e674b8363feabc57fde54f790c52c8ae43240b79d49042b777bfd6cb80e931270b7f50eb:1
+ChaCha:5555555555555555555555555555555555555555555555555555555555555555:aaaaaaaaaaaaaaaa:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000:aff7418293f3a553894b1e7484bd1e8ede196eced5a1d6814de37091e07e076e34bbba8107a686c982850f0a7353940d40db1ab0b5765b78b4cf473d9485a3dd:1
+ChaCha:5555555555555555555555555555555555555555555555555555555555555555:5555555555555555:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000:bea9411aa453c5434a5ae8c92862f564396855a9ea6e22d6d3b50ae1b3663311a4a3606c671d605ce16c3aece8e61ea145c59775017bee2fa6f88afc758069f7:1
+ChaCha:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:aaaaaaaaaaaaaaaa:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000:9aa2a9f656efde5aa7591c5fed4b35aea2895dec7cb4543b9e9f21f5e7bcbcf3c43c748a970888f8248393a09d43e0b7e164bc4d0b0fb240a2d72115c4808906:1
+ChaCha:00112233445566778899aabbccddeeffffeeddccbbaa99887766554433221100:0f1e2d3c4b5a6978:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000:9fadf409c00811d00431d67efbd88fba59218d5d6708b1d685863fabbb0e961eea480fd6fb532bfd494b2151015057423ab60a63fe4f55f7a212e2167ccab931:1
+ChaCha:c46ec1b18ce8a878725a37e780dfb7351f68ed2e194c79fbc6aebee1a667975d:1ada31d5cf688221:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000:f63a89b75c2271f9368816542ba52f06ed49241792302b00b5e8f80ae9a473afc25b218f519af0fdd406362e8d69de7f54c604a6e00f353f110f771bdca8ab92:1