dany/pdfio
1
0
Fork 0
mirror of https://github.com/michaelrsweet/pdfio.git synced 2025-07-15 21:40:11 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add SHA-256 code from RFC 6234.

Browse Source
This commit is contained in:
Michael R Sweet
2021-10-08 18:55:25 -04:00
parent 8aef2bfedd
commit 9c05f802fc
3 changed files with 494 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
pdfio-private.h
View File

@ -196,6 +196,16 @@ typedef struct _pdfio_rc4_s // RC4 encryption state
uint8_t i, j; // Current indices into S boxes
} _pdfio_rc4_t;
typedef struct _pdfio_sha265_s // SHA-256 hash state
{
uint32_t Intermediate_Hash[8]; // Message Digest
uint32_t Length_High; // Message length in bits
uint32_t Length_Low; // Message length in bits
int Message_Block_Index; // Message_Block array index
uint8_t Message_Block[64]; // 512-bit message blocks
int Computed; // Is the hash computed?
int Corrupted; // Cumulative corruption code
} _pdfio_sha256_t;
struct _pdfio_array_s
{
@ -325,6 +335,9 @@ extern void _pdfioCryptoMD5Finish(_pdfio_md5_t *pms, uint8_t digest[16]) _PDFIO
extern void _pdfioCryptoMD5Init(_pdfio_md5_t *pms) _PDFIO_INTERNAL;
extern void _pdfioCryptoRC4Init(_pdfio_rc4_t *ctx, const uint8_t *key, size_t keylen) _PDFIO_INTERNAL;
extern void _pdfioCryptoRC4Crypt(_pdfio_rc4_t *ctx, uint8_t *buffer, size_t len) _PDFIO_INTERNAL;
extern void _pdfioCryptoSHA256Append(_pdfio_sha256_t *, const uint8_t *bytes, size_t bytecount) _PDFIO_INTERNAL;
extern void _pdfioCryptoSHA256Init(_pdfio_sha256_t *ctx) _PDFIO_INTERNAL;
extern void _pdfioCryptoSHA256Finish(_pdfio_sha256_t *ctx, uint8_t *Message_Digest) _PDFIO_INTERNAL;
extern void _pdfioDictDebug(pdfio_dict_t *dict, FILE *fp) _PDFIO_INTERNAL;
extern void _pdfioDictDelete(pdfio_dict_t *dict) _PDFIO_INTERNAL;