/* * SHA1PadMessage * * Description: * According to the standard, the message must be padded to the next * even multiple of 512 bits. The first padding bit must be a ¡¯1¡¯. * The last 64 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 message block 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 SHA1PadMessage(SHA1Context *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 >= (SHA1_Message_Block_Size - 8)) { context->Message_Block[context->Message_Block_Index++] = Pad_Byte; while (context->Message_Block_Index < SHA1_Message_Block_Size) context->Message_Block[context->Message_Block_Index++] = 0; SHA1ProcessMessageBlock(context); } else context->Message_Block[context->Message_Block_Index++] = Pad_Byte; while (context->Message_Block_Index < (SHA1_Message_Block_Size - 8)) context->Message_Block[context->Message_Block_Index++] = 0; /* * Store the message length as the last 8 octets */ context->Message_Block[56] = (uint8_t)(context->Length_High >> 24); context->Message_Block[57] = (uint8_t)(context->Length_High >> 16); context->Message_Block[58] = (uint8_t)(context->Length_High >> 8); context->Message_Block[59] = (uint8_t)(context->Length_High); context->Message_Block[60] = (uint8_t)(context->Length_Low >> 24); context->Message_Block[61] = (uint8_t)(context->Length_Low >> 16); context->Message_Block[62] = (uint8_t)(context->Length_Low >> 8); context->Message_Block[63] = (uint8_t)(context->Length_Low); SHA1ProcessMessageBlock(context); }
void SHA1PadMessage(SHA1Context *context) { /* * 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 > 55) { context->Message_Block[context->Message_Block_Index++] = 0x80; while(context->Message_Block_Index < 64) { context->Message_Block[context->Message_Block_Index++] = 0; } SHA1ProcessMessageBlock(context); while(context->Message_Block_Index < 56) { context->Message_Block[context->Message_Block_Index++] = 0; } } else { context->Message_Block[context->Message_Block_Index++] = 0x80; while(context->Message_Block_Index < 56) { context->Message_Block[context->Message_Block_Index++] = 0; } } /* * Store the message length as the last 8 octets */ context->Message_Block[56] = 0; context->Message_Block[57] = 0; context->Message_Block[58] = 0; context->Message_Block[59] = 0; /* context->Message_Block[60] = (UCHAR)(context->Length_Low >> 24); context->Message_Block[61] = (UCHAR)(context->Length_Low >> 16); context->Message_Block[62] = (UCHAR)(context->Length_Low >> 8); context->Message_Block[63] = (UCHAR)(context->Length_Low); */ /* context->Message_Block[60] = (UCHAR)(rr_32x8(context->Length_Low, 24)); context->Message_Block[61] = (UCHAR)(rr_32x8(context->Length_Low, 16)); context->Message_Block[62] = (UCHAR)(rr_32x8(context->Length_Low, 8)); context->Message_Block[63] = (UCHAR)(context->Length_Low); */ ULONG2PCHAR(context->Length_Low, (PCHAR)(context->Message_Block + 60)); SHA1ProcessMessageBlock(context); }
void SHA1PadMessage(SHA1Context idata *context) { /* * 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 > 55) { context->Message_Block[context->Message_Block_Index++] = 0x80; while(context->Message_Block_Index < 64) { context->Message_Block[context->Message_Block_Index++] = 0; } SHA1ProcessMessageBlock(context); while(context->Message_Block_Index < 56) { context->Message_Block[context->Message_Block_Index++] = 0; } } else { context->Message_Block[context->Message_Block_Index++] = 0x80; while(context->Message_Block_Index < 56) { context->Message_Block[context->Message_Block_Index++] = 0; } } /* * Store the message length as the last 8 octets */ context->Message_Block[24] = (context->Length_High >> 24) & 0xFF; context->Message_Block[25] = (context->Length_High >> 16) & 0xFF; context->Message_Block[26] = (context->Length_High >> 8) & 0xFF; context->Message_Block[27] = (context->Length_High) & 0xFF; context->Message_Block[28] = (context->Length_Low >> 24) & 0xFF; context->Message_Block[29] = (context->Length_Low >> 16) & 0xFF; context->Message_Block[30] = (context->Length_Low >> 8) & 0xFF; context->Message_Block[31] = (context->Length_Low) & 0xFF; SHA1ProcessMessageBlock(context); //blink_led(); }
/* * SHA1Input * * Description: * This function accepts an array of octets as the next portion of * the message. * * Parameters: * context: [in/out] * The SHA-1 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: * Nothing. * * Comments: * */ void sha1_hash(const unsigned char *data, unsigned int length, sha1_ctx *ctx) { if (!length) { return; } if (ctx->Computed || ctx->Corrupted) { ctx->Corrupted = 1; return; } while (length-- && !ctx->Corrupted) { ctx->Message_Block[ctx->Message_Block_Index++] = (*data & 0xFF); ctx->Length_Low += 8; /* Force it to 32 bits */ ctx->Length_Low &= 0xFFFFFFFF; if (ctx->Length_Low == 0) { ctx->Length_High++; /* Force it to 32 bits */ ctx->Length_High &= 0xFFFFFFFF; if (ctx->Length_High == 0) { /* Message is too long */ ctx->Corrupted = 1; } } if (ctx->Message_Block_Index == 64) { SHA1ProcessMessageBlock(ctx); } data++; } }
void SHA1PadMessage(SHA1Context *context) { /* * 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 > 55) { context->Message_Block[context->Message_Block_Index++] = 0x80; while(context->Message_Block_Index < 64) { context->Message_Block[context->Message_Block_Index++] = 0; } SHA1ProcessMessageBlock(context); while(context->Message_Block_Index < 56) { context->Message_Block[context->Message_Block_Index++] = 0; } } else { context->Message_Block[context->Message_Block_Index++] = 0x80; while(context->Message_Block_Index < 56) { context->Message_Block[context->Message_Block_Index++] = 0; } } /* * Store the message length as the last 8 octets */ context->Message_Block[56] = context->Length_High >> 24; context->Message_Block[57] = context->Length_High >> 16; context->Message_Block[58] = context->Length_High >> 8; context->Message_Block[59] = context->Length_High; context->Message_Block[60] = context->Length_Low >> 24; context->Message_Block[61] = context->Length_Low >> 16; context->Message_Block[62] = context->Length_Low >> 8; context->Message_Block[63] = context->Length_Low; SHA1ProcessMessageBlock(context); }
void SHA1PadMessage(SHA1Context *context) { context->Message_Block[context->Message_Block_Index++] = 0x80; if (context->Message_Block_Index > 56) { //was 55, one shift while(context->Message_Block_Index < 64) context->Message_Block[context->Message_Block_Index++] = 0; SHA1ProcessMessageBlock(context); while(context->Message_Block_Index < 56) context->Message_Block[context->Message_Block_Index++] = 0; } else while(context->Message_Block_Index < 56) context->Message_Block[context->Message_Block_Index++] = 0; context->Message_Block[56] = (context->Length_High >> 24) & 0xFF; context->Message_Block[57] = (context->Length_High >> 16) & 0xFF; context->Message_Block[58] = (context->Length_High >> 8) & 0xFF; context->Message_Block[59] = (context->Length_High) & 0xFF; context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF; context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF; context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF; context->Message_Block[63] = (context->Length_Low) & 0xFF; SHA1ProcessMessageBlock(context); }
/* * SHA1Input * * 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 SHA1Input( SHA1Context *context, const uint8_t *message_array, unsigned 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); context->Length_Low += 8; if (context->Length_Low == 0) { context->Length_High++; if (context->Length_High == 0) { /* Message is too long */ context->Corrupted = 1; } } if (context->Message_Block_Index == 64) { SHA1ProcessMessageBlock(context); } message_array++; } return shaSuccess; }
/* * SHA1Input * * 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. * */ void SHA1Input(SHA1Context *context, PCHAR message_array, UCHAR length) { while(length--) { context->Message_Block[context->Message_Block_Index++] = *message_array; context->Length_Low += 8; if (context->Message_Block_Index == 64) { SHA1ProcessMessageBlock(context); } message_array++; } }
void SHA1PadMessage(SHA1Context *context) { if (context->Message_Block_Index > 55) { context->Message_Block[context->Message_Block_Index++] = 0x80; while(context->Message_Block_Index < 64) { context->Message_Block[context->Message_Block_Index++] = 0; } SHA1ProcessMessageBlock(context); while(context->Message_Block_Index < 56) { context->Message_Block[context->Message_Block_Index++] = 0; } } else { context->Message_Block[context->Message_Block_Index++] = 0x80; while(context->Message_Block_Index < 56) { context->Message_Block[context->Message_Block_Index++] = 0; } } context->Message_Block[56] = (context->Length_High >> 24) & 0xFF; context->Message_Block[57] = (context->Length_High >> 16) & 0xFF; context->Message_Block[58] = (context->Length_High >> 8) & 0xFF; context->Message_Block[59] = (context->Length_High) & 0xFF; context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF; context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF; context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF; context->Message_Block[63] = (context->Length_Low) & 0xFF; SHA1ProcessMessageBlock(context); }
static void SHA1PadMessage(SHA1Context *context) { if (!context) return; /* * 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. */ context->Message_Block[context->Message_Block_Index++] = 0x80; if (context->Message_Block_Index > 55) { while(context->Message_Block_Index < 64) context->Message_Block[context->Message_Block_Index++] = 0; SHA1ProcessMessageBlock(context); } while(context->Message_Block_Index < 56) context->Message_Block[context->Message_Block_Index++] = 0; /* Store the message length as the last 8 octets */ context->Message_Block[56] = (context->Length_High >> 24) & 0xFF; context->Message_Block[57] = (context->Length_High >> 16) & 0xFF; context->Message_Block[58] = (context->Length_High >> 8) & 0xFF; context->Message_Block[59] = (context->Length_High) & 0xFF; context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF; context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF; context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF; context->Message_Block[63] = (context->Length_Low) & 0xFF; SHA1ProcessMessageBlock(context); }
/* * SHA1Input * * 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 octets representing the next portion of * the message. * length: [in] * The length of the message in message_array. * * Returns: * sha Error Code. * */ int SHA1Input(SHA1Context *context, const uint8_t *message_array, unsigned int length) { if (!context) return shaNull; if (!length) return shaSuccess; if (!message_array) return shaNull; if (context->Computed) return context->Corrupted = shaStateError; if (context->Corrupted) return context->Corrupted; while (length--) { context->Message_Block[context->Message_Block_Index++] = *message_array; if ((SHA1AddLength(context, 8) == shaSuccess) && (context->Message_Block_Index == SHA1_Message_Block_Size)) SHA1ProcessMessageBlock(context); message_array++; } return context->Corrupted; }
/* * SHA1Input * * Description: * This function accepts an array of octets as the next portion of * the message. * * Parameters: * context: [in/out] * The SHA-1 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: * Nothing. * * Comments: * */ static void SHA1Input( SHA1Context *context, const unsigned char *message_array, uint32_t length) { if (!length) { return; } if (context->Computed || context->Corrupted) { context->Corrupted = 1; return; } while(length-- && !context->Corrupted) { context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF); context->Length_Low += 8; /* Force it to 32 bits */ context->Length_Low &= 0xFFFFFFFF; if (context->Length_Low == 0) { context->Length_High++; /* Force it to 32 bits */ context->Length_High &= 0xFFFFFFFF; if (context->Length_High == 0) { /* Message is too long */ context->Corrupted = 1; } } if (context->Message_Block_Index == 64) { SHA1ProcessMessageBlock(context); } message_array++; } }
void SHA1Input(SHA1Context *context, const unsigned char *message_array, unsigned length) { if (!length) return; if (context->Computed || context->Corrupted) { context->Corrupted = 1; return; } while(length-- && !context->Corrupted) { context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF); context->Length_Low += 8; context->Length_Low &= 0xFFFFFFFF; if (!context->Length_Low && !(context->Length_High=((1+context->Length_High)&0xFFFFFFFF))) context->Corrupted = 1; // too long message if (context->Message_Block_Index == 64) SHA1ProcessMessageBlock(context); message_array++; } }
void SHA1Input(SHA1Context idata *context,unsigned char idata *message_array,unsigned idata length) { if (!length) { return; } if (context->Computed || context->Corrupted) { context->Corrupted = 1; return; } while(length-- && !context->Corrupted) { context->Message_Block[context->Message_Block_Index++] =(*message_array & 0xFF); //blink_led(); context->Length_Low += 8; /* Force it to 32 bits */ context->Length_Low &= 0xFFFFFFFF; if (context->Length_Low == 0) { context->Length_High++; /* Force it to 32 bits */ context->Length_High &= 0xFFFFFFFF; if (context->Length_High == 0) { /* Message is too long */ context->Corrupted = 1; } } if (context->Message_Block_Index == 32) { SHA1ProcessMessageBlock(context); } message_array++; } }