Review comments

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

22 files changed, 237 insertions, 263 deletions

diff --git a/CHANGES b/CHANGES
index e9d3f02bca..da3cb796ad 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,9 @@
 
  Changes between 1.0.2g and 1.1.0  [xx XXX xxxx]
 
+  *) Add support for blake2b and blake2s
+     [Bill Cox]
+
   *) Added support for "pipelining". Ciphers that have the
      EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
      encryptions/decryptions simultaneously. There are currently no built-in
diff --git a/apps/progs.h b/apps/progs.h
index 77b4555cd5..fff26392e4 100644
--- a/apps/progs.h
+++ b/apps/progs.h
@@ -225,11 +225,9 @@ static FUNCTION functions[] = {
 #ifndef OPENSSL_NO_RMD160
     { FT_md, "rmd160", dgst_main},
 #endif
-#ifndef OPENSSL_NO_BLAKE2B
-    { FT_md, "blake2b", dgst_main},
-#endif
-#ifndef OPENSSL_NO_BLAKE2S
-    { FT_md, "blake2s", dgst_main},
+#ifndef OPENSSL_NO_BLAKE2
+    { FT_md, "blake2b512", dgst_main},
+    { FT_md, "blake2s256", dgst_main},
 #endif
 #ifndef OPENSSL_NO_AES
     { FT_cipher, "aes-128-cbc", enc_main, enc_options },
diff --git a/crypto/blake2/Makefile.in b/crypto/blake2/Makefile.in
index b992c853ae..452d1ea1e0 100644
--- a/crypto/blake2/Makefile.in
+++ b/crypto/blake2/Makefile.in
@@ -1,7 +1,3 @@
-#
-# OpenSSL/crypto/blake2/Makefile
-#
-
 DIR=	blake2
 TOP=	../..
 CC=	cc
@@ -17,8 +13,8 @@ AFLAGS= $(ASFLAGS)
 GENERAL=Makefile
 
 LIB=$(TOP)/libcrypto.a
-LIBSRC=blake2b.c blake2s.c
-LIBOBJ=blake2b.o blake2s.o
+LIBSRC=blake2b.c blake2s.c m_blake2b.c m_blake2s.c
+LIBOBJ=blake2b.o blake2s.o m_blake2b.o m_blake2s.o
 
 SRC= $(LIBSRC)
 
diff --git a/crypto/blake2/blake2_impl.h b/crypto/blake2/blake2_impl.h
index 6490e1e155..bd02de9ad2 100644
--- a/crypto/blake2/blake2_impl.h
+++ b/crypto/blake2/blake2_impl.h
@@ -1,101 +1,106 @@
 /*
- * BLAKE2 reference source code package - reference C implementations
- *
  * Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.
- * You may use this under the terms of the CC0, the OpenSSL Licence, or the
- * Apache Public License 2.0, at your option.  The terms of these licenses can
- * be found at:
- *
- * - OpenSSL license   : https://www.openssl.org/source/license.html
- * - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
- * - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
  *
- * More information about the BLAKE2 hash function can be found at
- * https://blake2.net.
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
  */
 
-/* crypto/blake2/blake2_impl.h */
+/*
+ * Derived from the BLAKE2 reference implementation written by Samuel Neves.
+ * More information about the BLAKE2 hash function and its implementations
+ * can be found at https://blake2.net.
+ */
 
-#include <stdint.h>
 #include <string.h>
+#include "e_os.h"
 
-static inline uint32_t load32(const void *src)
+static ossl_inline uint32_t load32(const void *src)
 {
-#if defined(L_ENDIAN)
-    uint32_t w;
-    memcpy(&w, src, sizeof(w));
-    return w;
-#else
-    const uint8_t *p = (const uint8_t *)src;
-    uint32_t w = *p++;
-    w |= (uint32_t)(*p++) <<  8;
-    w |= (uint32_t)(*p++) << 16;
-    w |= (uint32_t)(*p++) << 24;
-    return w;
-#endif
+    const union {
+        long one;
+        char little;
+    } is_endian = { 1 };
+
+    if (is_endian.little) {
+        uint32_t w;
+        memcpy(&w, src, sizeof(w));
+        return w;
+    } else {
+        const uint8_t *p = (const uint8_t *)src;
+        uint32_t w = *p++;
+        w |= (uint32_t)(*p++) <<  8;
+        w |= (uint32_t)(*p++) << 16;
+        w |= (uint32_t)(*p++) << 24;
+        return w;
+    }
 }
 
-static inline uint64_t load64(const void *src)
+static ossl_inline uint64_t load64(const void *src)
 {
-#if defined(L_ENDIAN)
-    uint64_t w;
-    memcpy(&w, src, sizeof(w));
-    return w;
-#else
-    const uint8_t *p = (const uint8_t *)src;
-    uint64_t w = *p++;
-    w |= (uint64_t)(*p++) <<  8;
-    w |= (uint64_t)(*p++) << 16;
-    w |= (uint64_t)(*p++) << 24;
-    w |= (uint64_t)(*p++) << 32;
-    w |= (uint64_t)(*p++) << 40;
-    w |= (uint64_t)(*p++) << 48;
-    w |= (uint64_t)(*p++) << 56;
-    return w;
-#endif
+    const union {
+        long one;
+        char little;
+    } is_endian = { 1 };
+
+    if (is_endian.little) {
+        uint64_t w;
+        memcpy(&w, src, sizeof(w));
+        return w;
+    } else {
+        const uint8_t *p = (const uint8_t *)src;
+        uint64_t w = *p++;
+        w |= (uint64_t)(*p++) <<  8;
+        w |= (uint64_t)(*p++) << 16;
+        w |= (uint64_t)(*p++) << 24;
+        w |= (uint64_t)(*p++) << 32;
+        w |= (uint64_t)(*p++) << 40;
+        w |= (uint64_t)(*p++) << 48;
+        w |= (uint64_t)(*p++) << 56;
+        return w;
+    }
 }
 
-static inline void store32(void *dst, uint32_t w)
+static ossl_inline void store32(void *dst, uint32_t w)
 {
-#if defined(L_ENDIAN)
-    memcpy(dst, &w, sizeof(w));
-#else
-    uint8_t *p = (uint8_t *)dst;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-#endif
+    const union {
+        long one;
+        char little;
+    } is_endian = { 1 };
+
+    if (is_endian.little) {
+        memcpy(dst, &w, sizeof(w));
+    } else {
+        uint8_t *p = (uint8_t *)dst;
+        int i;
+
+        for (i = 0; i < 4; i++)
+            p[i] = (uint8_t)(w >> (8 * i));
+    }
 }
 
-static inline void store64(void *dst, uint64_t w)
+static ossl_inline void store64(void *dst, uint64_t w)
 {
-#if defined(L_ENDIAN)
-    memcpy(dst, &w, sizeof(w));
-#else
-    uint8_t *p = (uint8_t *)dst;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-    w >>= 8;
-    *p++ = (uint8_t)w;
-#endif
+    const union {
+        long one;
+        char little;
+    } is_endian = { 1 };
+
+    if (is_endian.little) {
+        memcpy(dst, &w, sizeof(w));
+    } else {
+        uint8_t *p = (uint8_t *)dst;
+        int i;
+
+        for (i = 0; i < 8; i++)
+            p[i] = (uint8_t)(w >> (8 * i));
+    }
 }
 
-static inline uint64_t load48(const void *src)
+static ossl_inline uint64_t load48(const void *src)
 {
     const uint8_t *p = (const uint8_t *)src;
     uint64_t w = *p++;
@@ -107,7 +112,7 @@ static inline uint64_t load48(const void *src)
     return w;
 }
 
-static inline void store48(void *dst, uint64_t w)
+static ossl_inline void store48(void *dst, uint64_t w)
 {
     uint8_t *p = (uint8_t *)dst;
     *p++ = (uint8_t)w;
@@ -123,22 +128,12 @@ static inline void store48(void *dst, uint64_t w)
     *p++ = (uint8_t)w;
 }
 
-static inline uint32_t rotl32(const uint32_t w, const unsigned c)
-{
-    return (w << c) | (w >> (32 - c));
-}
-
-static inline uint64_t rotl64(const uint64_t w, const unsigned c)
-{
-    return (w << c) | (w >> (64 - c));
-}
-
-static inline uint32_t rotr32(const uint32_t w, const unsigned c)
+static ossl_inline uint32_t rotr32(const uint32_t w, const unsigned c)
 {
     return (w >> c) | (w << (32 - c));
 }
 
-static inline uint64_t rotr64(const uint64_t w, const unsigned c)
+static ossl_inline uint64_t rotr64(const uint64_t w, const unsigned c)
 {
     return (w >> c) | (w << (64 - c));
 }
diff --git a/crypto/blake2/blake2b.c b/crypto/blake2/blake2b.c
index 23ad58359c..d187e6bd21 100644
--- a/crypto/blake2/blake2b.c
+++ b/crypto/blake2/blake2b.c
@@ -1,35 +1,33 @@
 /*
- * BLAKE2 reference source code package - reference C implementations
- *
  * Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.
- * You may use this under the terms of the CC0, the OpenSSL Licence, or the
- * Apache Public License 2.0, at your option.  The terms of these licenses can
- * be found at:
- *
- * - OpenSSL license   : https://www.openssl.org/source/license.html
- * - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
- * - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
  *
- * More information about the BLAKE2 hash function can be found at
- * https://blake2.net.
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
  */
 
-/* crypto/blake2/blake2b.c */
+/*
+ * Derived from the BLAKE2 reference implementation written by Samuel Neves.
+ * More information about the BLAKE2 hash function and its implementations
+ * can be found at https://blake2.net.
+ */
 
-#include <stdint.h>
 #include <string.h>
-#include <stdio.h>
 #include <openssl/crypto.h>
+#include "e_os.h"
 
 #include "internal/blake2_locl.h"
 #include "blake2_impl.h"
 
 static const uint64_t blake2b_IV[8] =
 {
-    0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
-    0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
-    0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
-    0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
+    0x6a09e667f3bcc908U, 0xbb67ae8584caa73bU,
+    0x3c6ef372fe94f82bU, 0xa54ff53a5f1d36f1U,
+    0x510e527fade682d1U, 0x9b05688c2b3e6c1fU,
+    0x1f83d9abfb41bd6bU, 0x5be0cd19137e2179U
 };
 
 static const uint8_t blake2b_sigma[12][16] =
@@ -48,26 +46,26 @@ static const uint8_t blake2b_sigma[12][16] =
     { 14, 10,  4,  8,  9, 15, 13,  6,  1, 12,  0,  2, 11,  7,  5,  3 }
 };
 
-/* Some helper functions, not necessarily useful */
-static inline void blake2b_set_lastblock(BLAKE2B_CTX *S)
+/* Set that it's the last block we'll compress */
+static ossl_inline void blake2b_set_lastblock(BLAKE2B_CTX *S)
 {
     S->f[0] = -1;
 }
 
-/* Increment the data hashed couter. */
-static inline void blake2b_increment_counter(BLAKE2B_CTX *S,
-                                             const uint64_t inc)
+/* Increment the data hashed counter. */
+static ossl_inline void blake2b_increment_counter(BLAKE2B_CTX *S,
+                                                  const uint64_t inc)
 {
     S->t[0] += inc;
     S->t[1] += (S->t[0] < inc);
 }
 
 /* Initialize the hashing state. */
-static inline void blake2b_init0(BLAKE2B_CTX *S)
+static ossl_inline void blake2b_init0(BLAKE2B_CTX *S)
 {
     int i;
-    memset(S, 0, sizeof(BLAKE2B_CTX));
 
+    memset(S, 0, sizeof(BLAKE2B_CTX));
     for(i = 0; i < 8; ++i) {
         S->h[i] = blake2b_IV[i];
     }
@@ -202,7 +200,7 @@ int BLAKE2b_Update(BLAKE2B_CTX *c, const void *data, size_t datalen)
 }
 
 /*
- * Finalize the hash state in a way that avoids length extension attacks.
+ * Calculate the final hash and save it in md.
  * Always returns 1.
  */
 int BLAKE2b_Final(unsigned char *md, BLAKE2B_CTX *c)
diff --git a/crypto/blake2/blake2s.c b/crypto/blake2/blake2s.c
index 174d20cd21..eee615d944 100644
--- a/crypto/blake2/blake2s.c
+++ b/crypto/blake2/blake2s.c
@@ -1,33 +1,31 @@
 /*
- * BLAKE2 reference source code package - reference C implementations
- *
  * Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.
- * You may use this under the terms of the CC0, the OpenSSL Licence, or the
- * Apache Public License 2.0, at your option.  The terms of these licenses can
- * be found at:
- *
- * - OpenSSL license   : https://www.openssl.org/source/license.html
- * - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
- * - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
  *
- * More information about the BLAKE2 hash function can be found at
- * https://blake2.net.
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
  */
 
-/* crypto/blake2/blake2s.c */
+/*
+ * Derived from the BLAKE2 reference implementation written by Samuel Neves.
+ * More information about the BLAKE2 hash function and its implementations
+ * can be found at https://blake2.net.
+ */
 
-#include <stdint.h>
 #include <string.h>
-#include <stdio.h>
 #include <openssl/crypto.h>
+#include "e_os.h"
 
 #include "internal/blake2_locl.h"
 #include "blake2_impl.h"
 
 static const uint32_t blake2s_IV[8] =
 {
-    0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL,
-    0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL
+    0x6A09E667U, 0xBB67AE85U, 0x3C6EF372U, 0xA54FF53AU,
+    0x510E527FU, 0x9B05688CU, 0x1F83D9ABU, 0x5BE0CD19U
 };
 
 static const uint8_t blake2s_sigma[10][16] =
@@ -44,22 +42,22 @@ static const uint8_t blake2s_sigma[10][16] =
     { 10,  2,  8,  4,  7,  6,  1,  5, 15, 11,  9, 14,  3, 12, 13 , 0 } ,
 };
 
-/* Some helper functions, not necessarily useful */
-static inline void blake2s_set_lastblock(BLAKE2S_CTX *S)
+/* Set that it's the last block we'll compress */
+static ossl_inline void blake2s_set_lastblock(BLAKE2S_CTX *S)
 {
-  S->f[0] = -1;
+    S->f[0] = -1;
 }
 
-/* Increment the data hashed couter. */
-static inline void blake2s_increment_counter(BLAKE2S_CTX *S,
-                                             const uint32_t inc)
+/* Increment the data hashed counter. */
+static ossl_inline void blake2s_increment_counter(BLAKE2S_CTX *S,
+                                                  const uint32_t inc)
 {
     S->t[0] += inc;
     S->t[1] += (S->t[0] < inc);
 }
 
 /* Initialize the hashing state. */
-static inline void blake2s_init0(BLAKE2S_CTX *S)
+static ossl_inline void blake2s_init0(BLAKE2S_CTX *S)
 {
     int i;
 
@@ -98,7 +96,6 @@ int BLAKE2s_Init(BLAKE2S_CTX *c)
     store48(&P->node_offset, 0);
     P->node_depth    = 0;
     P->inner_length  = 0;
-    /* memset(P->reserved, 0, sizeof(P->reserved)); */
     memset(P->salt,     0, sizeof(P->salt));
     memset(P->personal, 0, sizeof(P->personal));
     blake2s_init_param(c, P);
@@ -197,7 +194,7 @@ int BLAKE2s_Update(BLAKE2S_CTX *c, const void *data, size_t datalen)
 }
 
 /*
- * Finalize the hash state in a way that avoids length extension attacks.
+ * Calculate the final hash and save it in md.
  * Always returns 1.
  */
 int BLAKE2s_Final(unsigned char *md, BLAKE2S_CTX *c)
diff --git a/crypto/blake2/build.info b/crypto/blake2/build.info
index f2b8f41990..0036f08482 100644
--- a/crypto/blake2/build.info
+++ b/crypto/blake2/build.info
@@ -1,3 +1,3 @@
 LIBS=../../libcrypto
 SOURCE[../../libcrypto]=\
-        blake2b.c blake2s.c
+        blake2b.c blake2s.c m_blake2b.c m_blake2s.c
diff --git a/crypto/evp/m_blake2b.c b/crypto/blake2/m_blake2b.c
index e3cf6f30a5..b74bdbdabb 100644
--- a/crypto/evp/m_blake2b.c
+++ b/crypto/blake2/m_blake2b.c
@@ -1,22 +1,20 @@
 /*
- * BLAKE2 reference source code package - reference C implementations
- *
  * Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.
- * You may use this under the terms of the CC0, the OpenSSL Licence, or the
- * Apache Public License 2.0, at your option.  The terms of these licenses can
- * be found at:
- *
- * - OpenSSL license   : https://www.openssl.org/source/license.html
- * - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
- * - CC0 1.0 Universal : http://www.apache.org/licenses/LICENSE-2.0
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
  *
- * More information about the BLAKE2 hash function can be found at
- * https://blake2.net.
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
  */
 
-/* crypto/evp/m_blake2b.c */
+/*
+ * Derived from the BLAKE2 reference implementation written by Samuel Neves.
+ * More information about the BLAKE2 hash function and its implementations
+ * can be found at https://blake2.net.
+ */
 
-#include <stdio.h>
 #include "internal/cryptlib.h"
 
 #ifndef OPENSSL_NO_BLAKE2
@@ -42,7 +40,7 @@ static int final(EVP_MD_CTX *ctx, unsigned char *md)
 }
 
 static const EVP_MD blake2b_md = {
-    NID_blake2b,
+    NID_blake2b512,
     0,
     BLAKE2B_DIGEST_LENGTH,
     0,
@@ -55,7 +53,7 @@ static const EVP_MD blake2b_md = {
     sizeof(EVP_MD *) + sizeof(BLAKE2B_CTX),
 };
 
-const EVP_MD *EVP_blake2b(void)
+const EVP_MD *EVP_blake2b512(void)
 {
     return (&blake2b_md);
 }
diff --git a/crypto/evp/m_blake2s.c b/crypto/blake2/m_blake2s.c
index 511b192c1d..01974d966c 100644
--- a/crypto/evp/m_blake2s.c
+++ b/crypto/blake2/m_blake2s.c
@@ -1,22 +1,20 @@
 /*
- * BLAKE2 reference source code package - reference C implementations
- *
  * Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.
- * You may use this under the terms of the CC0, the OpenSSL Licence, or the
- * Apache Public License 2.0, at your option.  The terms of these licenses can
- * be found at:
- *
- * - OpenSSL license   : https://www.openssl.org/source/license.html
- * - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
- * - CC0 1.0 Universal : http://www.apache.org/licenses/LICENSE-2.0
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
  *
- * More information about the BLAKE2 hash function can be found at
- * https://blake2.net.
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
  */
 
-/* crypto/evp/m_blake2s.c */
+/*
+ * Derived from the BLAKE2 reference implementation written by Samuel Neves.
+ * More information about the BLAKE2 hash function and its implementations
+ * can be found at https://blake2.net.
+ */
 
-#include <stdio.h>
 #include "internal/cryptlib.h"
 
 #ifndef OPENSSL_NO_BLAKE2
@@ -42,7 +40,7 @@ static int final(EVP_MD_CTX *ctx, unsigned char *md)
 }
 
 static const EVP_MD blake2s_md = {
-    NID_blake2s,
+    NID_blake2s256,
     0,
     BLAKE2S_DIGEST_LENGTH,
     0,
@@ -55,7 +53,7 @@ static const EVP_MD blake2s_md = {
     sizeof(EVP_MD *) + sizeof(BLAKE2S_CTX),
 };
 
-const EVP_MD *EVP_blake2s(void)
+const EVP_MD *EVP_blake2s256(void)
 {
     return (&blake2s_md);
 }
diff --git a/crypto/evp/Makefile.in b/crypto/evp/Makefile.in
index d7b12035a4..5b24ae5909 100644
--- a/crypto/evp/Makefile.in
+++ b/crypto/evp/Makefile.in
@@ -20,7 +20,7 @@ LIBSRC= encode.c digest.c evp_enc.c evp_key.c evp_cnf.c \
 	e_rc4.c e_aes.c names.c e_seed.c \
 	e_xcbc_d.c e_rc2.c e_cast.c e_rc5.c \
 	m_null.c m_md2.c m_md4.c m_md5.c m_sha1.c m_wp.c \
-	m_md5_sha1.c m_mdc2.c m_ripemd.c m_blake2b.c m_blake2s.c \
+	m_md5_sha1.c m_mdc2.c m_ripemd.c \
 	p_open.c p_seal.c p_sign.c p_verify.c p_lib.c p_enc.c p_dec.c \
 	bio_md.c bio_b64.c bio_enc.c evp_err.c e_null.c \
 	c_allc.c c_alld.c evp_lib.c bio_ok.c \
@@ -34,7 +34,7 @@ LIBOBJ=	encode.o digest.o evp_enc.o evp_key.o evp_cnf.o \
 	e_rc4.o e_aes.o names.o e_seed.o \
 	e_xcbc_d.o e_rc2.o e_cast.o e_rc5.o \
 	m_null.o m_md2.o m_md4.o m_md5.o m_sha1.o m_wp.o \
-	m_md5_sha1.o m_mdc2.o m_ripemd.o m_blake2b.o m_blake2s.o \
+	m_md5_sha1.o m_mdc2.o m_ripemd.o \
 	p_open.o p_seal.o p_sign.o p_verify.o p_lib.o p_enc.o p_dec.o \
 	bio_md.o bio_b64.o bio_enc.o evp_err.o e_null.o \
 	c_allc.o c_alld.o evp_lib.o bio_ok.o \
diff --git a/crypto/evp/build.info b/crypto/evp/build.info
index 8dc60f6414..bf633dc713 100644
--- a/crypto/evp/build.info
+++ b/crypto/evp/build.info
@@ -5,7 +5,7 @@ SOURCE[../../libcrypto]=\
         e_rc4.c e_aes.c names.c e_seed.c \
         e_xcbc_d.c e_rc2.c e_cast.c e_rc5.c \
         m_null.c m_md2.c m_md4.c m_md5.c m_sha1.c m_wp.c \
-        m_md5_sha1.c m_mdc2.c m_ripemd.c m_blake2b.c m_blake2s.c \
+        m_md5_sha1.c m_mdc2.c m_ripemd.c \
         p_open.c p_seal.c p_sign.c p_verify.c p_lib.c p_enc.c p_dec.c \
         bio_md.c bio_b64.c bio_enc.c evp_err.c e_null.c \
         c_allc.c c_alld.c evp_lib.c bio_ok.c \
diff --git a/crypto/evp/c_alld.c b/crypto/evp/c_alld.c
index 78be9fbc6a..ad261b3033 100644
--- a/crypto/evp/c_alld.c
+++ b/crypto/evp/c_alld.c
@@ -91,7 +91,7 @@ void openssl_add_all_digests_internal(void)
     EVP_add_digest(EVP_whirlpool());
 #endif
 #ifndef OPENSSL_NO_BLAKE2
-    EVP_add_digest(EVP_blake2b());
-    EVP_add_digest(EVP_blake2s());
+    EVP_add_digest(EVP_blake2b512());
+    EVP_add_digest(EVP_blake2s256());
 #endif
 }
diff --git a/crypto/include/internal/blake2_locl.h b/crypto/include/internal/blake2_locl.h
index 1f19def632..390065a8b2 100644
--- a/crypto/include/internal/blake2_locl.h
+++ b/crypto/include/internal/blake2_locl.h
@@ -1,23 +1,22 @@
 /*
- * BLAKE2 reference source code package - reference C implementations
- *
  * Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.
- * You may use this under the terms of the CC0, the OpenSSL Licence, or the
- * Apache Public License 2.0, at your option.  The terms of these licenses can
- * be found at:
- *
- * - OpenSSL license   : https://www.openssl.org/source/license.html
- * - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
- * - CC0 1.0 Universal : http://www.apache.org/licenses/LICENSE-2.0
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
  *
- * More information about the BLAKE2 hash function can be found at
- * https://blake2.net.
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
  */
 
-/* crypto/blake2/blake2_locl.h */
+/*
+ * Derived from the BLAKE2 reference implementation written by Samuel Neves.
+ * More information about the BLAKE2 hash function and its implementations
+ * can be found at https://blake2.net.
+ */
 
 #include <stddef.h>
-#include <stdint.h>
+#include "e_os.h"
 
 # ifdef OPENSSL_NO_BLAKE2
 #  error BLAKE2 is disabled.
@@ -44,7 +43,6 @@ struct blake2s_param_st {
     uint8_t  node_offset[6];/* 14 */
     uint8_t  node_depth;    /* 15 */
     uint8_t  inner_length;  /* 16 */
-    /* uint8_t  reserved[0]; */
     uint8_t  salt[BLAKE2S_SALTBYTES]; /* 24 */
     uint8_t  personal[BLAKE2S_PERSONALBYTES];  /* 32 */
 };
diff --git a/crypto/objects/obj_dat.h b/crypto/objects/obj_dat.h
index c9314208a7..d852a55c5c 100644
--- a/crypto/objects/obj_dat.h
+++ b/crypto/objects/obj_dat.h
@@ -1011,8 +1011,8 @@ static const unsigned char lvalues[6744]={
 0x2B,0x06,0x01,0x05,0x02,0x03,0x05,          /* [6696] OBJ_pkInitKDC */
 0x2B,0x06,0x01,0x04,0x01,0xDA,0x47,0x0F,0x01,/* [6703] OBJ_X25519 */
 0x2B,0x06,0x01,0x04,0x01,0xDA,0x47,0x0F,0x02,/* [6712] OBJ_X448 */
-0x2B,0x06,0x01,0x04,0x01,0x8D,0x3A,0x0C,0x02,0x01,0x10,/* [6721] OBJ_blake2b */
-0x2B,0x06,0x01,0x04,0x01,0x8D,0x3A,0x0C,0x02,0x02,0x08,/* [6732] OBJ_blake2s */
+0x2B,0x06,0x01,0x04,0x01,0x8D,0x3A,0x0C,0x02,0x01,0x10,/* [6721] OBJ_blake2b512 */
+0x2B,0x06,0x01,0x04,0x01,0x8D,0x3A,0x0C,0x02,0x02,0x08,/* [6732] OBJ_blake2s256 */
 };
 
 static const ASN1_OBJECT nid_objs[NUM_NID]={
@@ -2726,8 +2726,8 @@ static const ASN1_OBJECT nid_objs[NUM_NID]={
 {"AuthNULL","auth-null",NID_auth_null,0,NULL,0},
 {NULL,NULL,NID_undef,0,NULL,0},
 {NULL,NULL,NID_undef,0,NULL,0},
-{"BLAKE2b","blake2b",NID_blake2b,11,&(lvalues[6721]),0},
-{"BLAKE2s","blake2s",NID_blake2s,11,&(lvalues[6732]),0},
+{"BLAKE2b512","blake2b512",NID_blake2b512,11,&(lvalues[6721]),0},
+{"BLAKE2s256","blake2s256",NID_blake2s256,11,&(lvalues[6732]),0},
 };
 
 static const unsigned int sn_objs[NUM_SN]={
@@ -2776,8 +2776,8 @@ static const unsigned int sn_objs[NUM_SN]={
 93,	/* "BF-CFB" */
 92,	/* "BF-ECB" */
 94,	/* "BF-OFB" */
-1056,	/* "BLAKE2b" */
-1057,	/* "BLAKE2s" */
+1056,	/* "BLAKE2b512" */
+1057,	/* "BLAKE2s256" */
 14,	/* "C" */
 751,	/* "CAMELLIA-128-CBC" */
 962,	/* "CAMELLIA-128-CCM" */
@@ -4016,8 +4016,8 @@ static const unsigned int ln_objs[NUM_LN]={
 93,	/* "bf-cfb" */
 92,	/* "bf-ecb" */
 94,	/* "bf-ofb" */
-1056,	/* "blake2b" */
-1057,	/* "blake2s" */
+1056,	/* "blake2b512" */
+1057,	/* "blake2s256" */
 921,	/* "brainpoolP160r1" */
 922,	/* "brainpoolP160t1" */
 923,	/* "brainpoolP192r1" */
@@ -5786,7 +5786,7 @@ static const unsigned int obj_objs[NUM_OBJ]={
 955,	/* OBJ_jurisdictionLocalityName     1 3 6 1 4 1 311 60 2 1 1 */
 956,	/* OBJ_jurisdictionStateOrProvinceName 1 3 6 1 4 1 311 60 2 1 2 */
 957,	/* OBJ_jurisdictionCountryName      1 3 6 1 4 1 311 60 2 1 3 */
-1056,	/* OBJ_blake2b                      1 3 6 1 4 1 1722 12 2 1 16 */
-1057,	/* OBJ_blake2s                      1 3 6 1 4 1 1722 12 2 2 8 */
+1056,	/* OBJ_blake2b512                   1 3 6 1 4 1 1722 12 2 1 16 */
+1057,	/* OBJ_blake2s256                   1 3 6 1 4 1 1722 12 2 2 8 */
 };
 
diff --git a/crypto/objects/obj_mac.num b/crypto/objects/obj_mac.num
index dfdb61aa5d..01d53b8516 100644
--- a/crypto/objects/obj_mac.num
+++ b/crypto/objects/obj_mac.num
@@ -1053,5 +1053,5 @@ auth_srp		1052
 auth_null		1053
 fips_none		1054
 fips_140_2		1055
-blake2b		1056
-blake2s		1057
+blake2b512		1056
+blake2s256		1057
diff --git a/crypto/objects/objects.txt b/crypto/objects/objects.txt
index 24b0f42e52..ba8891dfd7 100644
--- a/crypto/objects/objects.txt
+++ b/crypto/objects/objects.txt
@@ -671,8 +671,8 @@ algorithm 29		: RSA-SHA1-2		: sha1WithRSA
 1 3 36 3 2 1		: RIPEMD160		: ripemd160
 1 3 36 3 3 1 2		: RSA-RIPEMD160		: ripemd160WithRSA
 
-1 3 6 1 4 1 1722 12 2 1 16 : BLAKE2b            : blake2b
-1 3 6 1 4 1 1722 12 2 2 8  : BLAKE2s            : blake2s
+1 3 6 1 4 1 1722 12 2 1 16 : BLAKE2b512        : blake2b512
+1 3 6 1 4 1 1722 12 2 2 8  : BLAKE2s256        : blake2s256
 
 !Cname sxnet
 1 3 101 1 4 1		: SXNetID		: Strong Extranet ID
diff --git a/doc/crypto/EVP_DigestInit.pod b/doc/crypto/EVP_DigestInit.pod
index fdc407fa32..94c4d19d29 100644
--- a/doc/crypto/EVP_DigestInit.pod
+++ b/doc/crypto/EVP_DigestInit.pod
@@ -8,7 +8,7 @@ EVP_DigestInit, EVP_DigestFinal, EVP_MD_CTX_copy, EVP_MD_type,
 EVP_MD_pkey_type, EVP_MD_size, EVP_MD_block_size, EVP_MD_CTX_md, EVP_MD_CTX_size,
 EVP_MD_CTX_block_size, EVP_MD_CTX_type, EVP_md_null, EVP_md2, EVP_md5, EVP_sha1,
 EVP_sha224, EVP_sha256, EVP_sha384, EVP_sha512, EVP_mdc2,
-EVP_ripemd160, EVP_blake2b, EVP_blake2s, EVP_get_digestbyname,
+EVP_ripemd160, EVP_blake2b_512, EVP_blake2s_256, EVP_get_digestbyname,
 EVP_get_digestbynid, EVP_get_digestbyobj - EVP digest routines
 
 =head1 SYNOPSIS
@@ -57,8 +57,8 @@ EVP_get_digestbynid, EVP_get_digestbyobj - EVP digest routines
  const EVP_MD *EVP_sha1(void);
  const EVP_MD *EVP_mdc2(void);
  const EVP_MD *EVP_ripemd160(void);
- const EVP_MD *EVP_blake2b(void);
- const EVP_MD *EVP_blake2s(void);
+ const EVP_MD *EVP_blake2b_512(void);
+ const EVP_MD *EVP_blake2s_256(void);
 
  const EVP_