Azure IoT
Azure IoT common library
Dependents: STM32F746_iothub_client_sample_mqtt f767zi_mqtt iothub_client_sample_amqp iothub_client_sample_http ... more
Diff: sha384-512.c
- Revision:
- 0:fa2de1b79154
- Child:
- 15:956c6d205aa7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sha384-512.c Fri Apr 08 12:01:36 2016 -0700
@@ -0,0 +1,1047 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+/*************************** sha384-512.c ***************************/
+/********************* See RFC 4634 for details *********************/
+/*
+* Description:
+* This file implements the Secure Hash Signature Standard
+* algorithms as defined in the National Institute of Standards
+* and Technology Federal Information Processing Standards
+* Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2
+* published on August 1, 2002, and the FIPS PUB 180-2 Change
+* Notice published on February 28, 2004.
+*
+* A combined document showing all algorithms is available at
+* http://csrc.nist.gov/publications/fips/
+* fips180-2/fips180-2withchangenotice.pdf
+*
+* The SHA-384 and SHA-512 algorithms produce 384-bit and 512-bit
+* message digests for a given data stream. It should take about
+* 2**n steps to find a message with the same digest as a given
+* message and 2**(n/2) to find any two messages with the same
+* digest, when n is the digest size in bits. Therefore, this
+* algorithm can serve as a means of providing a
+* "fingerprint" for a message.
+*
+* Portability Issues:
+* SHA-384 and SHA-512 are defined in terms of 64-bit "words",
+* but if USE_32BIT_ONLY is #defined, this code is implemented in
+* terms of 32-bit "words". This code uses <stdint.h> (included
+* via "sha.h") to define the 64, 32 and 8 bit unsigned integer
+* types. If your C compiler does not support 64 bit unsigned
+* integers, and you do not #define USE_32BIT_ONLY, this code is
+* not appropriate.
+*
+* Caveats:
+* SHA-384 and SHA-512 are designed to work with messages less
+* than 2^128 bits long. This implementation uses
+* SHA384/512Input() to hash the bits that are a multiple of the
+* size of an 8-bit character, and then uses SHA384/256FinalBits()
+* to hash the final few bits of the input.
+*
+*/
+
+#include <stdlib.h>
+#ifdef _CRTDBG_MAP_ALLOC
+#include <crtdbg.h>
+#endif
+#include "azure_c_shared_utility/gballoc.h"
+
+#include "azure_c_shared_utility/sha.h"
+#include "azure_c_shared_utility/sha-private.h"
+
+#ifdef USE_32BIT_ONLY
+/*
+* Define 64-bit arithmetic in terms of 32-bit arithmetic.
+* Each 64-bit number is represented in a 2-word array.
+* All macros are defined such that the result is the last parameter.
+*/
+
+/*
+* Define shift, rotate left and rotate right functions
+*/
+#define SHA512_SHR(bits, word, ret) ( \
+ /* (((uint64_t)((word))) >> (bits)) */ \
+ (ret)[0] = (((bits) < 32) && ((bits) >= 0)) ? \
+ ((word)[0] >> (bits)) : 0, \
+ (ret)[1] = ((bits) > 32) ? ((word)[0] >> ((bits) - 32)) : \
+ ((bits) == 32) ? (word)[0] : \
+ ((bits) >= 0) ? \
+ (((word)[0] << (32 - (bits))) | \
+ ((word)[1] >> (bits))) : 0 )
+
+#define SHA512_SHL(bits, word, ret) ( \
+ /* (((uint64_t)(word)) << (bits)) */ \
+ (ret)[0] = ((bits) > 32) ? ((word)[1] << ((bits) - 32)) : \
+ ((bits) == 32) ? (word)[1] : \
+ ((bits) >= 0) ? \
+ (((word)[0] << (bits)) | \
+ ((word)[1] >> (32 - (bits)))) : \
+0, \
+(ret)[1] = (((bits) < 32) && ((bits) >= 0)) ? \
+((word)[1] << (bits)) : 0)
+
+/*
+* Define 64-bit OR
+*/
+#define SHA512_OR(word1, word2, ret) ( \
+ (ret)[0] = (word1)[0] | (word2)[0], \
+ (ret)[1] = (word1)[1] | (word2)[1] )
+
+/*
+* Define 64-bit XOR
+*/
+#define SHA512_XOR(word1, word2, ret) ( \
+ (ret)[0] = (word1)[0] ^ (word2)[0], \
+ (ret)[1] = (word1)[1] ^ (word2)[1] )
+
+/*
+* Define 64-bit AND
+*/
+#define SHA512_AND(word1, word2, ret) ( \
+ (ret)[0] = (word1)[0] & (word2)[0], \
+ (ret)[1] = (word1)[1] & (word2)[1] )
+
+/*
+* Define 64-bit TILDA
+*/
+#define SHA512_TILDA(word, ret) \
+ ( (ret)[0] = ~(word)[0], (ret)[1] = ~(word)[1] )
+
+/*
+* Define 64-bit ADD
+*/
+#define SHA512_ADD(word1, word2, ret) ( \
+ (ret)[1] = (word1)[1], (ret)[1] += (word2)[1], \
+ (ret)[0] = (word1)[0] + (word2)[0] + ((ret)[1] < (word1)[1]) )
+
+/*
+* Add the 4word value in word2 to word1.
+*/
+static uint32_t ADDTO4_temp, ADDTO4_temp2;
+#define SHA512_ADDTO4(word1, word2) ( \
+ ADDTO4_temp = (word1)[3], \
+ (word1)[3] += (word2)[3], \
+ ADDTO4_temp2 = (word1)[2], \
+ (word1)[2] += (word2)[2] + ((word1)[3] < ADDTO4_temp), \
+ ADDTO4_temp = (word1)[1], \
+(word1)[1] += (word2)[1] + ((word1)[2] < ADDTO4_temp2), \
+(word1)[0] += (word2)[0] + ((word1)[1] < ADDTO4_temp))
+
+/*
+* Add the 2word value in word2 to word1.
+*/
+static uint32_t ADDTO2_temp;
+#define SHA512_ADDTO2(word1, word2) ( \
+ ADDTO2_temp = (word1)[1], \
+ (word1)[1] += (word2)[1], \
+ (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO2_temp) )
+
+/*
+* SHA rotate ((word >> bits) | (word << (64-bits)))
+*/
+static uint32_t ROTR_temp1[2], ROTR_temp2[2];
+#define SHA512_ROTR(bits, word, ret) ( \
+ SHA512_SHR((bits), (word), ROTR_temp1), \
+ SHA512_SHL(64-(bits), (word), ROTR_temp2), \
+ SHA512_OR(ROTR_temp1, ROTR_temp2, (ret)) )
+
+/*
+* Define the SHA SIGMA and sigma macros
+* SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word)
+*/
+static uint32_t SIGMA0_temp1[2], SIGMA0_temp2[2],
+SIGMA0_temp3[2], SIGMA0_temp4[2];
+#define SHA512_SIGMA0(word, ret) ( \
+ SHA512_ROTR(28, (word), SIGMA0_temp1), \
+ SHA512_ROTR(34, (word), SIGMA0_temp2), \
+ SHA512_ROTR(39, (word), SIGMA0_temp3), \
+ SHA512_XOR(SIGMA0_temp2, SIGMA0_temp3, SIGMA0_temp4), \
+ SHA512_XOR(SIGMA0_temp1, SIGMA0_temp4, (ret)) )
+
+/*
+* SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word)
+*/
+static uint32_t SIGMA1_temp1[2], SIGMA1_temp2[2],
+SIGMA1_temp3[2], SIGMA1_temp4[2];
+#define SHA512_SIGMA1(word, ret) ( \
+ SHA512_ROTR(14, (word), SIGMA1_temp1), \
+ SHA512_ROTR(18, (word), SIGMA1_temp2), \
+ SHA512_ROTR(41, (word), SIGMA1_temp3), \
+ SHA512_XOR(SIGMA1_temp2, SIGMA1_temp3, SIGMA1_temp4), \
+ SHA512_XOR(SIGMA1_temp1, SIGMA1_temp4, (ret)) )
+
+/*
+* (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word))
+*/
+static uint32_t sigma0_temp1[2], sigma0_temp2[2],
+sigma0_temp3[2], sigma0_temp4[2];
+#define SHA512_sigma0(word, ret) ( \
+ SHA512_ROTR( 1, (word), sigma0_temp1), \
+ SHA512_ROTR( 8, (word), sigma0_temp2), \
+ SHA512_SHR( 7, (word), sigma0_temp3), \
+ SHA512_XOR(sigma0_temp2, sigma0_temp3, sigma0_temp4), \
+ SHA512_XOR(sigma0_temp1, sigma0_temp4, (ret)) )
+
+/*
+* (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word))
+*/
+static uint32_t sigma1_temp1[2], sigma1_temp2[2],
+sigma1_temp3[2], sigma1_temp4[2];
+#define SHA512_sigma1(word, ret) ( \
+ SHA512_ROTR(19, (word), sigma1_temp1), \
+ SHA512_ROTR(61, (word), sigma1_temp2), \
+ SHA512_SHR( 6, (word), sigma1_temp3), \
+ SHA512_XOR(sigma1_temp2, sigma1_temp3, sigma1_temp4), \
+ SHA512_XOR(sigma1_temp1, sigma1_temp4, (ret)) )
+
+#undef SHA_Ch
+#undef SHA_Maj
+
+#ifndef USE_MODIFIED_MACROS
+/*
+* These definitions are the ones used in FIPS-180-2, section 4.1.3
+* Ch(x,y,z) ((x & y) ^ (~x & z))
+*/
+static uint32_t Ch_temp1[2], Ch_temp2[2], Ch_temp3[2];
+#define SHA_Ch(x, y, z, ret) ( \
+ SHA512_AND(x, y, Ch_temp1), \
+ SHA512_TILDA(x, Ch_temp2), \
+ SHA512_AND(Ch_temp2, z, Ch_temp3), \
+ SHA512_XOR(Ch_temp1, Ch_temp3, (ret)) )
+/*
+* Maj(x,y,z) (((x)&(y)) ^ ((x)&(z)) ^ ((y)&(z)))
+*/
+static uint32_t Maj_temp1[2], Maj_temp2[2],
+Maj_temp3[2], Maj_temp4[2];
+#define SHA_Maj(x, y, z, ret) ( \
+ SHA512_AND(x, y, Maj_temp1), \
+ SHA512_AND(x, z, Maj_temp2), \
+ SHA512_AND(y, z, Maj_temp3), \
+ SHA512_XOR(Maj_temp2, Maj_temp3, Maj_temp4), \
+ SHA512_XOR(Maj_temp1, Maj_temp4, (ret)) )
+
+#else /* !USE_32BIT_ONLY */
+/*
+* These definitions are potentially faster equivalents for the ones
+* used in FIPS-180-2, section 4.1.3.
+* ((x & y) ^ (~x & z)) becomes
+* ((x & (y ^ z)) ^ z)
+*/
+#define SHA_Ch(x, y, z, ret) ( \
+ (ret)[0] = (((x)[0] & ((y)[0] ^ (z)[0])) ^ (z)[0]), \
+ (ret)[1] = (((x)[1] & ((y)[1] ^ (z)[1])) ^ (z)[1]) )
+
+/*
+* ((x & y) ^ (x & z) ^ (y & z)) becomes
+* ((x & (y | z)) | (y & z))
+*/
+#define SHA_Maj(x, y, z, ret) ( \
+ ret[0] = (((x)[0] & ((y)[0] | (z)[0])) | ((y)[0] & (z)[0])), \
+ ret[1] = (((x)[1] & ((y)[1] | (z)[1])) | ((y)[1] & (z)[1])) )
+#endif /* USE_MODIFIED_MACROS */
+
+/*
+* add "length" to the length
+*/
+static uint32_t addTemp[4] = { 0, 0, 0, 0 };
+#define SHA384_512AddLength(context, length) ( \
+ addTemp[3] = (length), SHA512_ADDTO4((context)->Length, addTemp), \
+ (context)->Corrupted = (((context)->Length[3] == 0) && \
+ ((context)->Length[2] == 0) && ((context)->Length[1] == 0) && \
+ ((context)->Length[0] < 8)) ? 1 : 0 )
+
+/* Local Function Prototypes */
+static void SHA384_512Finalize(SHA512Context *context,
+ uint8_t Pad_Byte);
+static void SHA384_512PadMessage(SHA512Context *context,
+ uint8_t Pad_Byte);
+static void SHA384_512ProcessMessageBlock(SHA512Context *context);
+static int SHA384_512Reset(SHA512Context *context, uint32_t H0[]);
+static int SHA384_512ResultN(SHA512Context *context,
+ uint8_t Message_Digest[], int HashSize);
+
+/* Initial Hash Values: FIPS-180-2 sections 5.3.3 and 5.3.4 */
+static uint32_t SHA384_H0[SHA512HashSize / 4] = {
+ 0xCBBB9D5D, 0xC1059ED8, 0x629A292A, 0x367CD507, 0x9159015A,
+ 0x3070DD17, 0x152FECD8, 0xF70E5939, 0x67332667, 0xFFC00B31,
+ 0x8EB44A87, 0x68581511, 0xDB0C2E0D, 0x64F98FA7, 0x47B5481D,
+ 0xBEFA4FA4
+};
+
+static uint32_t SHA512_H0[SHA512HashSize / 4] = {
+ 0x6A09E667, 0xF3BCC908, 0xBB67AE85, 0x84CAA73B, 0x3C6EF372,
+ 0xFE94F82B, 0xA54FF53A, 0x5F1D36F1, 0x510E527F, 0xADE682D1,
+ 0x9B05688C, 0x2B3E6C1F, 0x1F83D9AB, 0xFB41BD6B, 0x5BE0CD19,
+ 0x137E2179
+};
+
+#else /* !USE_32BIT_ONLY */
+
+/* Define the SHA shift, rotate left and rotate right macro */
+#define SHA512_SHR(bits,word) (((uint64_t)(word)) >> (bits))
+#define SHA512_ROTR(bits,word) ((((uint64_t)(word)) >> (bits)) | \
+ (((uint64_t)(word)) << (64-(bits))))
+
+/* Define the SHA SIGMA and sigma macros */
+#define SHA512_SIGMA0(word) \
+ (SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word))
+#define SHA512_SIGMA1(word) \
+ (SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word))
+#define SHA512_sigma0(word) \
+ (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word))
+#define SHA512_sigma1(word) \
+ (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word))
+
+/*
+* add "length" to the length
+*/
+static uint64_t addTemp;
+#define SHA384_512AddLength(context, length) \
+ (addTemp = context->Length_Low, context->Corrupted = \
+ ((context->Length_Low += length) < addTemp) && \
+ (++context->Length_High == 0) ? 1 : 0)
+
+/* Local Function Prototypes */
+static void SHA384_512Finalize(SHA512Context *context,
+ uint8_t Pad_Byte);
+static void SHA384_512PadMessage(SHA512Context *context,
+ uint8_t Pad_Byte);
+static void SHA384_512ProcessMessageBlock(SHA512Context *context);
+static int SHA384_512Reset(SHA512Context *context, uint64_t H0[]);
+static int SHA384_512ResultN(SHA512Context *context,
+ uint8_t Message_Digest[], int HashSize);
+
+/* Initial Hash Values: FIPS-180-2 sections 5.3.3 and 5.3.4 */
+static uint64_t SHA384_H0[] = {
+ 0xCBBB9D5DC1059ED8ull, 0x629A292A367CD507ull, 0x9159015A3070DD17ull,
+ 0x152FECD8F70E5939ull, 0x67332667FFC00B31ull, 0x8EB44A8768581511ull,
+ 0xDB0C2E0D64F98FA7ull, 0x47B5481DBEFA4FA4ull
+};
+static uint64_t SHA512_H0[] = {
+ 0x6A09E667F3BCC908ull, 0xBB67AE8584CAA73Bull, 0x3C6EF372FE94F82Bull,
+ 0xA54FF53A5F1D36F1ull, 0x510E527FADE682D1ull, 0x9B05688C2B3E6C1Full,
+ 0x1F83D9ABFB41BD6Bull, 0x5BE0CD19137E2179ull
+};
+
+#endif /* USE_32BIT_ONLY */
+
+/*
+* SHA384Reset
+*
+* Description:
+* This function will initialize the SHA384Context in preparation
+* for computing a new SHA384 message digest.
+*
+* Parameters:
+* context: [in/out]
+* The context to reset.
+*
+* Returns:
+* sha Error Code.
+*
+*/
+int SHA384Reset(SHA384Context *context)
+{
+ return SHA384_512Reset(context, SHA384_H0);
+}
+
+/*
+* SHA384Input
+*
+* Description:
+* This function accepts an array of octets as the next portion
+* of the message.
+*
+* Parameters:
+* context: [in/out]
+* The SHA context to update
+* message_array: [in]
+* An array of characters representing the next portion of
+* the message.
+* length: [in]
+* The length of the message in message_array
+*
+* Returns:
+* sha Error Code.
+*
+*/
+int SHA384Input(SHA384Context *context,
+ const uint8_t *message_array, unsigned int length)
+{
+ return SHA512Input(context, message_array, length);
+}
+
+/*
+* SHA384FinalBits
+*
+* Description:
+* This function will add in any final bits of the message.
+*
+* Parameters:
+* context: [in/out]
+* The SHA context to update
+* message_bits: [in]
+* The final bits of the message, in the upper portion of the
+* byte. (Use 0b###00000 instead of 0b00000### to input the
+* three bits ###.)
+* length: [in]
+* The number of bits in message_bits, between 1 and 7.
+*
+* Returns:
+* sha Error Code.
+*
+*/
+int SHA384FinalBits(SHA384Context *context,
+ const uint8_t message_bits, unsigned int length)
+{
+ return SHA512FinalBits(context, message_bits, length);
+}
+
+/*
+* SHA384Result
+*
+* Description:
+* This function will return the 384-bit message
+* digest into the Message_Digest array provided by the caller.
+* NOTE: The first octet of hash is stored in the 0th element,
+* the last octet of hash in the 48th element.
+*
+* Parameters:
+* context: [in/out]
+* The context to use to calculate the SHA hash.
+* Message_Digest: [out]
+* Where the digest is returned.
+*
+* Returns:
+* sha Error Code.
+*
+*/
+int SHA384Result(SHA384Context *context,
+ uint8_t Message_Digest[SHA384HashSize])
+{
+ return SHA384_512ResultN(context, Message_Digest, SHA384HashSize);
+}
+
+/*
+* SHA512Reset
+*
+* Description:
+* This function will initialize the SHA512Context in preparation
+* for computing a new SHA512 message digest.
+*
+* Parameters:
+* context: [in/out]
+* The context to reset.
+*
+* Returns:
+* sha Error Code.
+*
+*/
+int SHA512Reset(SHA512Context *context)
+{
+ return SHA384_512Reset(context, SHA512_H0);
+}
+
+/*
+* SHA512Input
+*
+* Description:
+* This function accepts an array of octets as the next portion
+* of the message.
+*
+* Parameters:
+* context: [in/out]
+* The SHA context to update
+* message_array: [in]
+* An array of characters representing the next portion of
+* the message.
+* length: [in]
+* The length of the message in message_array
+*
+* Returns:
+* sha Error Code.
+*
+*/
+int SHA512Input(SHA512Context *context,
+ const uint8_t *message_array,
+ unsigned int length)
+{
+ if (!length)
+ return shaSuccess;
+
+ if (!context || !message_array)
+ return shaNull;
+
+ if (context->Computed) {
+ context->Corrupted = shaStateError;
+ return shaStateError;
+ }
+
+ if (context->Corrupted)
+ return context->Corrupted;
+
+ while (length-- && !context->Corrupted) {
+ context->Message_Block[context->Message_Block_Index++] =
+ (*message_array & 0xFF);
+
+ if (!SHA384_512AddLength(context, 8) &&
+ (context->Message_Block_Index == SHA512_Message_Block_Size))
+ SHA384_512ProcessMessageBlock(context);
+
+ message_array++;
+ }
+
+ return shaSuccess;
+}
+
+/*
+* SHA512FinalBits
+*
+* Description:
+* This function will add in any final bits of the message.
+*
+* Parameters:
+* context: [in/out]
+* The SHA context to update
+* message_bits: [in]
+* The final bits of the message, in the upper portion of the
+* byte. (Use 0b###00000 instead of 0b00000### to input the
+* three bits ###.)
+* length: [in]
+* The number of bits in message_bits, between 1 and 7.
+*
+* Returns:
+* sha Error Code.
+*
+*/
+int SHA512FinalBits(SHA512Context *context,
+ const uint8_t message_bits, unsigned int length)
+{
+ uint8_t masks[8] = {
+ /* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80,
+ /* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0,
+ /* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8,
+ /* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE
+ };
+ uint8_t markbit[8] = {
+ /* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40,
+ /* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10,
+ /* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04,
+ /* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01
+ };
+
+ if (!length)
+ return shaSuccess;
+
+ if (!context)
+ return shaNull;
+
+ if ((context->Computed) || (length >= 8) || (length == 0)) {
+ context->Corrupted = shaStateError;
+ return shaStateError;
+ }
+
+ if (context->Corrupted)
+ return context->Corrupted;
+
+ SHA384_512AddLength(context, length);
+ SHA384_512Finalize(context, (uint8_t)
+ ((message_bits & masks[length]) | markbit[length]));
+
+ return shaSuccess;
+}
+
+/*
+* SHA384_512Finalize
+*
+* Description:
+* This helper function finishes off the digest calculations.
+*
+* Parameters:
+* context: [in/out]
+* The SHA context to update
+* Pad_Byte: [in]
+* The last byte to add to the digest before the 0-padding
+* and length. This will contain the last bits of the message
+* followed by another single bit. If the message was an
+* exact multiple of 8-bits long, Pad_Byte will be 0x80.
+*
+* Returns:
+* sha Error Code.
+*
+*/
+static void SHA384_512Finalize(SHA512Context *context,
+ uint8_t Pad_Byte)
+{
+ int_least16_t i;
+ SHA384_512PadMessage(context, Pad_Byte);
+ /* message may be sensitive, clear it out */
+ for (i = 0; i < SHA512_Message_Block_Size; ++i)
+ context->Message_Block[i] = 0;
+#ifdef USE_32BIT_ONLY /* and clear length */
+ context->Length[0] = context->Length[1] = 0;
+ context->Length[2] = context->Length[3] = 0;
+#else /* !USE_32BIT_ONLY */
+ context->Length_Low = 0;
+ context->Length_High = 0;
+#endif /* USE_32BIT_ONLY */
+ context->Computed = 1;
+}
+
+/*
+* SHA512Result
+*
+* Description:
+* This function will return the 512-bit message
+* digest into the Message_Digest array provided by the caller.
+* NOTE: The first octet of hash is stored in the 0th element,
+* the last octet of hash in the 64th element.
+*
+* Parameters:
+* context: [in/out]
+* The context to use to calculate the SHA hash.
+* Message_Digest: [out]
+* Where the digest is returned.
+*
+* Returns:
+* sha Error Code.
+*
+*/
+int SHA512Result(SHA512Context *context,
+ uint8_t Message_Digest[SHA512HashSize])
+{
+ return SHA384_512ResultN(context, Message_Digest, SHA512HashSize);
+}
+
+/*
+* SHA384_512PadMessage
+*
+* Description:
+* According to the standard, the message must be padded to an
+* even 1024 bits. The first padding bit must be a '1'. The
+* last 128 bits represent the length of the original message.
+* All bits in between should be 0. This helper function will
+* pad the message according to those rules by filling the
+* Message_Block array accordingly. When it returns, it can be
+* assumed that the message digest has been computed.
+*
+* Parameters:
+* context: [in/out]
+* The context to pad
+* Pad_Byte: [in]
+* The last byte to add to the digest before the 0-padding
+* and length. This will contain the last bits of the message
+* followed by another single bit. If the message was an
+* exact multiple of 8-bits long, Pad_Byte will be 0x80.
+*
+* Returns:
+* Nothing.
+*
+*/
+static void SHA384_512PadMessage(SHA512Context *context,
+ uint8_t Pad_Byte)
+{
+ /*
+ * Check to see if the current message block is too small to hold
+ * the initial padding bits and length. If so, we will pad the
+ * block, process it, and then continue padding into a second
+ * block.
+ */
+ if (context->Message_Block_Index >= (SHA512_Message_Block_Size - 16)) {
+ context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
+ while (context->Message_Block_Index < SHA512_Message_Block_Size)
+ context->Message_Block[context->Message_Block_Index++] = 0;
+
+ SHA384_512ProcessMessageBlock(context);
+ }
+ else
+ context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
+
+ while (context->Message_Block_Index < (SHA512_Message_Block_Size - 16))
+ context->Message_Block[context->Message_Block_Index++] = 0;
+
+ /*
+ * Store the message length as the last 16 octets
+ */
+#ifdef USE_32BIT_ONLY
+ context->Message_Block[112] = (uint8_t)(context->Length[0] >> 24);
+ context->Message_Block[113] = (uint8_t)(context->Length[0] >> 16);
+ context->Message_Block[114] = (uint8_t)(context->Length[0] >> 8);
+ context->Message_Block[115] = (uint8_t)(context->Length[0]);
+ context->Message_Block[116] = (uint8_t)(context->Length[1] >> 24);
+ context->Message_Block[117] = (uint8_t)(context->Length[1] >> 16);
+ context->Message_Block[118] = (uint8_t)(context->Length[1] >> 8);
+ context->Message_Block[119] = (uint8_t)(context->Length[1]);
+
+ context->Message_Block[120] = (uint8_t)(context->Length[2] >> 24);
+ context->Message_Block[121] = (uint8_t)(context->Length[2] >> 16);
+ context->Message_Block[122] = (uint8_t)(context->Length[2] >> 8);
+ context->Message_Block[123] = (uint8_t)(context->Length[2]);
+ context->Message_Block[124] = (uint8_t)(context->Length[3] >> 24);
+ context->Message_Block[125] = (uint8_t)(context->Length[3] >> 16);
+ context->Message_Block[126] = (uint8_t)(context->Length[3] >> 8);
+ context->Message_Block[127] = (uint8_t)(context->Length[3]);
+#else /* !USE_32BIT_ONLY */
+ context->Message_Block[112] = (uint8_t)(context->Length_High >> 56);
+ context->Message_Block[113] = (uint8_t)(context->Length_High >> 48);
+ context->Message_Block[114] = (uint8_t)(context->Length_High >> 40);
+ context->Message_Block[115] = (uint8_t)(context->Length_High >> 32);
+ context->Message_Block[116] = (uint8_t)(context->Length_High >> 24);
+ context->Message_Block[117] = (uint8_t)(context->Length_High >> 16);
+ context->Message_Block[118] = (uint8_t)(context->Length_High >> 8);
+ context->Message_Block[119] = (uint8_t)(context->Length_High);
+
+ context->Message_Block[120] = (uint8_t)(context->Length_Low >> 56);
+ context->Message_Block[121] = (uint8_t)(context->Length_Low >> 48);
+ context->Message_Block[122] = (uint8_t)(context->Length_Low >> 40);
+ context->Message_Block[123] = (uint8_t)(context->Length_Low >> 32);
+ context->Message_Block[124] = (uint8_t)(context->Length_Low >> 24);
+ context->Message_Block[125] = (uint8_t)(context->Length_Low >> 16);
+ context->Message_Block[126] = (uint8_t)(context->Length_Low >> 8);
+ context->Message_Block[127] = (uint8_t)(context->Length_Low);
+#endif /* USE_32BIT_ONLY */
+
+ SHA384_512ProcessMessageBlock(context);
+}
+
+/*
+* SHA384_512ProcessMessageBlock
+*
+* Description:
+* This helper function will process the next 1024 bits of the
+* message stored in the Message_Block array.
+*
+* Parameters:
+* context: [in/out]
+* The SHA context to update
+*
+* Returns:
+* Nothing.
+*
+* Comments:
+* Many of the variable names in this code, especially the
+* single character names, were used because those were the
+* names used in the publication.
+*
+*
+*/
+static void SHA384_512ProcessMessageBlock(SHA512Context *context)
+{
+ /* Constants defined in FIPS-180-2, section 4.2.3 */
+#ifdef USE_32BIT_ONLY
+ static const uint32_t K[80 * 2] = {
+ 0x428A2F98, 0xD728AE22, 0x71374491, 0x23EF65CD, 0xB5C0FBCF,
+ 0xEC4D3B2F, 0xE9B5DBA5, 0x8189DBBC, 0x3956C25B, 0xF348B538,
+ 0x59F111F1, 0xB605D019, 0x923F82A4, 0xAF194F9B, 0xAB1C5ED5,
+ 0xDA6D8118, 0xD807AA98, 0xA3030242, 0x12835B01, 0x45706FBE,
+ 0x243185BE, 0x4EE4B28C, 0x550C7DC3, 0xD5FFB4E2, 0x72BE5D74,
+ 0xF27B896F, 0x80DEB1FE, 0x3B1696B1, 0x9BDC06A7, 0x25C71235,
+ 0xC19BF174, 0xCF692694, 0xE49B69C1, 0x9EF14AD2, 0xEFBE4786,
+ 0x384F25E3, 0x0FC19DC6, 0x8B8CD5B5, 0x240CA1CC, 0x77AC9C65,
+ 0x2DE92C6F, 0x592B0275, 0x4A7484AA, 0x6EA6E483, 0x5CB0A9DC,
+ 0xBD41FBD4, 0x76F988DA, 0x831153B5, 0x983E5152, 0xEE66DFAB,
+ 0xA831C66D, 0x2DB43210, 0xB00327C8, 0x98FB213F, 0xBF597FC7,
+ 0xBEEF0EE4, 0xC6E00BF3, 0x3DA88FC2, 0xD5A79147, 0x930AA725,
+ 0x06CA6351, 0xE003826F, 0x14292967, 0x0A0E6E70, 0x27B70A85,
+ 0x46D22FFC, 0x2E1B2138, 0x5C26C926, 0x4D2C6DFC, 0x5AC42AED,
+ 0x53380D13, 0x9D95B3DF, 0x650A7354, 0x8BAF63DE, 0x766A0ABB,
+ 0x3C77B2A8, 0x81C2C92E, 0x47EDAEE6, 0x92722C85, 0x1482353B,
+ 0xA2BFE8A1, 0x4CF10364, 0xA81A664B, 0xBC423001, 0xC24B8B70,
+ 0xD0F89791, 0xC76C51A3, 0x0654BE30, 0xD192E819, 0xD6EF5218,
+ 0xD6990624, 0x5565A910, 0xF40E3585, 0x5771202A, 0x106AA070,
+ 0x32BBD1B8, 0x19A4C116, 0xB8D2D0C8, 0x1E376C08, 0x5141AB53,
+ 0x2748774C, 0xDF8EEB99, 0x34B0BCB5, 0xE19B48A8, 0x391C0CB3,
+ 0xC5C95A63, 0x4ED8AA4A, 0xE3418ACB, 0x5B9CCA4F, 0x7763E373,
+ 0x682E6FF3, 0xD6B2B8A3, 0x748F82EE, 0x5DEFB2FC, 0x78A5636F,
+ 0x43172F60, 0x84C87814, 0xA1F0AB72, 0x8CC70208, 0x1A6439EC,
+ 0x90BEFFFA, 0x23631E28, 0xA4506CEB, 0xDE82BDE9, 0xBEF9A3F7,
+ 0xB2C67915, 0xC67178F2, 0xE372532B, 0xCA273ECE, 0xEA26619C,
+ 0xD186B8C7, 0x21C0C207, 0xEADA7DD6, 0xCDE0EB1E, 0xF57D4F7F,
+ 0xEE6ED178, 0x06F067AA, 0x72176FBA, 0x0A637DC5, 0xA2C898A6,
+ 0x113F9804, 0xBEF90DAE, 0x1B710B35, 0x131C471B, 0x28DB77F5,
+ 0x23047D84, 0x32CAAB7B, 0x40C72493, 0x3C9EBE0A, 0x15C9BEBC,
+ 0x431D67C4, 0x9C100D4C, 0x4CC5D4BE, 0xCB3E42B6, 0x597F299C,
+ 0xFC657E2A, 0x5FCB6FAB, 0x3AD6FAEC, 0x6C44198C, 0x4A475817
+ };
+ int t, t2, t8; /* Loop counter */
+ uint32_t temp1[2], temp2[2], /* Temporary word values */
+ temp3[2], temp4[2], temp5[2];
+ uint32_t W[2 * 80]; /* Word sequence */
+ uint32_t A[2], B[2], C[2], D[2], /* Word buffers */
+ E[2], F[2], G[2], H[2];
+
+ /* Initialize the first 16 words in the array W */
+ for (t = t2 = t8 = 0; t < 16; t++, t8 += 8) {
+ W[t2++] = ((((uint32_t)context->Message_Block[t8])) << 24) |
+ ((((uint32_t)context->Message_Block[t8 + 1])) << 16) |
+ ((((uint32_t)context->Message_Block[t8 + 2])) << 8) |
+ ((((uint32_t)context->Message_Block[t8 + 3])));
+ W[t2++] = ((((uint32_t)context->Message_Block[t8 + 4])) << 24) |
+ ((((uint32_t)context->Message_Block[t8 + 5])) << 16) |
+ ((((uint32_t)context->Message_Block[t8 + 6])) << 8) |
+ ((((uint32_t)context->Message_Block[t8 + 7])));
+ }
+
+ for (t = 16; t < 80; t++, t2 += 2) {
+ /* W[t] = SHA512_sigma1(W[t-2]) + W[t-7] +
+ SHA512_sigma0(W[t-15]) + W[t-16]; */
+ uint32_t *Wt2 = &W[t2 - 2 * 2];
+ uint32_t *Wt7 = &W[t2 - 7 * 2];
+ uint32_t *Wt15 = &W[t2 - 15 * 2];
+ uint32_t *Wt16 = &W[t2 - 16 * 2];
+ SHA512_sigma1(Wt2, temp1);
+ SHA512_ADD(temp1, Wt7, temp2);
+ SHA512_sigma0(Wt15, temp1);
+ SHA512_ADD(temp1, Wt16, temp3);
+ SHA512_ADD(temp2, temp3, &W[t2]);
+ }
+
+ A[0] = context->Intermediate_Hash[0];
+ A[1] = context->Intermediate_Hash[1];
+ B[0] = context->Intermediate_Hash[2];
+ B[1] = context->Intermediate_Hash[3];
+ C[0] = context->Intermediate_Hash[4];
+ C[1] = context->Intermediate_Hash[5];
+ D[0] = context->Intermediate_Hash[6];
+ D[1] = context->Intermediate_Hash[7];
+ E[0] = context->Intermediate_Hash[8];
+ E[1] = context->Intermediate_Hash[9];
+ F[0] = context->Intermediate_Hash[10];
+ F[1] = context->Intermediate_Hash[11];
+ G[0] = context->Intermediate_Hash[12];
+ G[1] = context->Intermediate_Hash[13];
+ H[0] = context->Intermediate_Hash[14];
+ H[1] = context->Intermediate_Hash[15];
+
+ for (t = t2 = 0; t < 80; t++, t2 += 2) {
+ /*
+ * temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t];
+ */
+ SHA512_SIGMA1(E, temp1);
+ SHA512_ADD(H, temp1, temp2);
+ SHA_Ch(E, F, G, temp3);
+ SHA512_ADD(temp2, temp3, temp4);
+ SHA512_ADD(&K[t2], &W[t2], temp5);
+ SHA512_ADD(temp4, temp5, temp1);
+ /*
+ * temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C);
+ */
+ SHA512_SIGMA0(A, temp3);
+ SHA_Maj(A, B, C, temp4);
+ SHA512_ADD(temp3, temp4, temp2);
+ H[0] = G[0]; H[1] = G[1];
+ G[0] = F[0]; G[1] = F[1];
+ F[0] = E[0]; F[1] = E[1];
+ SHA512_ADD(D, temp1, E);
+ D[0] = C[0]; D[1] = C[1];
+ C[0] = B[0]; C[1] = B[1];
+ B[0] = A[0]; B[1] = A[1];
+ SHA512_ADD(temp1, temp2, A);
+ }
+
+ SHA512_ADDTO2(&context->Intermediate_Hash[0], A);
+ SHA512_ADDTO2(&context->Intermediate_Hash[2], B);
+ SHA512_ADDTO2(&context->Intermediate_Hash[4], C);
+ SHA512_ADDTO2(&context->Intermediate_Hash[6], D);
+ SHA512_ADDTO2(&context->Intermediate_Hash[8], E);
+ SHA512_ADDTO2(&context->Intermediate_Hash[10], F);
+ SHA512_ADDTO2(&context->Intermediate_Hash[12], G);
+ SHA512_ADDTO2(&context->Intermediate_Hash[14], H);
+
+#else /* !USE_32BIT_ONLY */
+ static const uint64_t K[80] = {
+ 0x428A2F98D728AE22ull, 0x7137449123EF65CDull, 0xB5C0FBCFEC4D3B2Full,
+ 0xE9B5DBA58189DBBCull, 0x3956C25BF348B538ull, 0x59F111F1B605D019ull,
+ 0x923F82A4AF194F9Bull, 0xAB1C5ED5DA6D8118ull, 0xD807AA98A3030242ull,
+ 0x12835B0145706FBEull, 0x243185BE4EE4B28Cull, 0x550C7DC3D5FFB4E2ull,
+ 0x72BE5D74F27B896Full, 0x80DEB1FE3B1696B1ull, 0x9BDC06A725C71235ull,
+ 0xC19BF174CF692694ull, 0xE49B69C19EF14AD2ull, 0xEFBE4786384F25E3ull,
+ 0x0FC19DC68B8CD5B5ull, 0x240CA1CC77AC9C65ull, 0x2DE92C6F592B0275ull,
+ 0x4A7484AA6EA6E483ull, 0x5CB0A9DCBD41FBD4ull, 0x76F988DA831153B5ull,
+ 0x983E5152EE66DFABull, 0xA831C66D2DB43210ull, 0xB00327C898FB213Full,
+ 0xBF597FC7BEEF0EE4ull, 0xC6E00BF33DA88FC2ull, 0xD5A79147930AA725ull,
+ 0x06CA6351E003826Full, 0x142929670A0E6E70ull, 0x27B70A8546D22FFCull,
+ 0x2E1B21385C26C926ull, 0x4D2C6DFC5AC42AEDull, 0x53380D139D95B3DFull,
+ 0x650A73548BAF63DEull, 0x766A0ABB3C77B2A8ull, 0x81C2C92E47EDAEE6ull,
+ 0x92722C851482353Bull, 0xA2BFE8A14CF10364ull, 0xA81A664BBC423001ull,
+ 0xC24B8B70D0F89791ull, 0xC76C51A30654BE30ull, 0xD192E819D6EF5218ull,
+ 0xD69906245565A910ull, 0xF40E35855771202Aull, 0x106AA07032BBD1B8ull,
+ 0x19A4C116B8D2D0C8ull, 0x1E376C085141AB53ull, 0x2748774CDF8EEB99ull,
+ 0x34B0BCB5E19B48A8ull, 0x391C0CB3C5C95A63ull, 0x4ED8AA4AE3418ACBull,
+ 0x5B9CCA4F7763E373ull, 0x682E6FF3D6B2B8A3ull, 0x748F82EE5DEFB2FCull,
+ 0x78A5636F43172F60ull, 0x84C87814A1F0AB72ull, 0x8CC702081A6439ECull,
+ 0x90BEFFFA23631E28ull, 0xA4506CEBDE82BDE9ull, 0xBEF9A3F7B2C67915ull,
+ 0xC67178F2E372532Bull, 0xCA273ECEEA26619Cull, 0xD186B8C721C0C207ull,
+ 0xEADA7DD6CDE0EB1Eull, 0xF57D4F7FEE6ED178ull, 0x06F067AA72176FBAull,
+ 0x0A637DC5A2C898A6ull, 0x113F9804BEF90DAEull, 0x1B710B35131C471Bull,
+ 0x28DB77F523047D84ull, 0x32CAAB7B40C72493ull, 0x3C9EBE0A15C9BEBCull,
+ 0x431D67C49C100D4Cull, 0x4CC5D4BECB3E42B6ull, 0x597F299CFC657E2Aull,
+ 0x5FCB6FAB3AD6FAECull, 0x6C44198C4A475817ull
+ };
+ int t, t8; /* Loop counter */
+ uint64_t temp1, temp2; /* Temporary word value */
+ uint64_t W[80]; /* Word sequence */
+ uint64_t A, B, C, D, E, F, G, H; /* Word buffers */
+
+ /*
+ * Initialize the first 16 words in the array W
+ */
+ for (t = t8 = 0; t < 16; t++, t8 += 8)
+ W[t] = ((uint64_t)(context->Message_Block[t8]) << 56) |
+ ((uint64_t)(context->Message_Block[t8 + 1]) << 48) |
+ ((uint64_t)(context->Message_Block[t8 + 2]) << 40) |
+ ((uint64_t)(context->Message_Block[t8 + 3]) << 32) |
+ ((uint64_t)(context->Message_Block[t8 + 4]) << 24) |
+ ((uint64_t)(context->Message_Block[t8 + 5]) << 16) |
+ ((uint64_t)(context->Message_Block[t8 + 6]) << 8) |
+ ((uint64_t)(context->Message_Block[t8 + 7]));
+
+ for (t = 16; t < 80; t++)
+ W[t] = SHA512_sigma1(W[t - 2]) + W[t - 7] +
+ SHA512_sigma0(W[t - 15]) + W[t - 16];
+
+ A = context->Intermediate_Hash[0];
+ B = context->Intermediate_Hash[1];
+ C = context->Intermediate_Hash[2];
+ D = context->Intermediate_Hash[3];
+ E = context->Intermediate_Hash[4];
+ F = context->Intermediate_Hash[5];
+ G = context->Intermediate_Hash[6];
+ H = context->Intermediate_Hash[7];
+
+ for (t = 0; t < 80; t++) {
+ temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E, F, G) + K[t] + W[t];
+ temp2 = SHA512_SIGMA0(A) + SHA_Maj(A, B, C);
+ H = G;
+ G = F;
+ F = E;
+ E = D + temp1;
+ D = C;
+ C = B;
+ B = A;
+ A = temp1 + temp2;
+ }
+
+ context->Intermediate_Hash[0] += A;
+ context->Intermediate_Hash[1] += B;
+ context->Intermediate_Hash[2] += C;
+ context->Intermediate_Hash[3] += D;
+ context->Intermediate_Hash[4] += E;
+ context->Intermediate_Hash[5] += F;
+ context->Intermediate_Hash[6] += G;
+ context->Intermediate_Hash[7] += H;
+#endif /* USE_32BIT_ONLY */
+
+ context->Message_Block_Index = 0;
+}
+
+/*
+* SHA384_512Reset
+*
+* Description:
+* This helper function will initialize the SHA512Context in
+* preparation for computing a new SHA384 or SHA512 message
+* digest.
+*
+* Parameters:
+* context: [in/out]
+* The context to reset.
+* H0
+* The initial hash value to use.
+*
+* Returns:
+* sha Error Code.
+*
+*/
+#ifdef USE_32BIT_ONLY
+static int SHA384_512Reset(SHA512Context *context, uint32_t H0[])
+#else /* !USE_32BIT_ONLY */
+static int SHA384_512Reset(SHA512Context *context, uint64_t H0[])
+#endif /* USE_32BIT_ONLY */
+{
+ int i;
+ if (!context)
+ return shaNull;
+
+ context->Message_Block_Index = 0;
+
+#ifdef USE_32BIT_ONLY
+ context->Length[0] = context->Length[1] = 0;
+ context->Length[2] = context->Length[3] = 0;
+
+ for (i = 0; i < SHA512HashSize / 4; i++)
+ context->Intermediate_Hash[i] = H0[i];
+#else /* !USE_32BIT_ONLY */
+ context->Length_High = context->Length_Low = 0;
+
+ for (i = 0; i < SHA512HashSize / 8; i++)
+ context->Intermediate_Hash[i] = H0[i];
+#endif /* USE_32BIT_ONLY */
+
+ context->Computed = 0;
+ context->Corrupted = 0;
+
+ return shaSuccess;
+}
+
+/*
+* SHA384_512ResultN
+*
+* Description:
+* This helper function will return the 384-bit or 512-bit message
+* digest into the Message_Digest array provided by the caller.
+* NOTE: The first octet of hash is stored in the 0th element,
+* the last octet of hash in the 48th/64th element.
+*
+* Parameters:
+* context: [in/out]
+* The context to use to calculate the SHA hash.
+* Message_Digest: [out]
+* Where the digest is returned.
+* HashSize: [in]
+* The size of the hash, either 48 or 64.
+*
+* Returns:
+* sha Error Code.
+*
+*/
+static int SHA384_512ResultN(SHA512Context *context,
+ uint8_t Message_Digest[], int HashSize)
+{
+ int i;
+
+#ifdef USE_32BIT_ONLY
+ int i2;
+#endif /* USE_32BIT_ONLY */
+
+ if (!context || !Message_Digest)
+ return shaNull;
+
+ if (context->Corrupted)
+ return context->Corrupted;
+
+ if (!context->Computed)
+ SHA384_512Finalize(context, 0x80);
+
+#ifdef USE_32BIT_ONLY
+ for (i = i2 = 0; i < HashSize;) {
+ Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 24);
+ Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 16);
+ Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 8);
+ Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2++]);
+ Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 24);
+ Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 16);
+ Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 8);
+ Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2++]);
+ }
+#else /* !USE_32BIT_ONLY */
+ for (i = 0; i < HashSize; ++i)
+ Message_Digest[i] = (uint8_t)
+ (context->Intermediate_Hash[i >> 3] >> 8 * (7 - (i % 8)));
+#endif /* USE_32BIT_ONLY */
+
+ return shaSuccess;
+}
+
