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implemented pbp-compatible self encryption mode (symetrical encryption using scrypt(passphrase, static nonce), no pk)

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TLINDEN
2014-01-22 23:20:30 +01:00
parent 7b56ab60a6
commit 1efff67d37
8 changed files with 338 additions and 173 deletions
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6
include/pcp/crypto.h
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@@ -53,10 +53,12 @@ unsigned char *pcp_box_decrypt(pcp_key_t *secret, pcp_pubkey_t *pub,
unsigned char *cipher, size_t ciphersize,
size_t *dsize);
size_t pcp_encrypt_file(FILE *in, FILE* out, pcp_key_t *s, pcp_pubkey_t *p, int self);
size_t pcp_encrypt_file(FILE *in, FILE* out, pcp_key_t *s, pcp_pubkey_t *p);
size_t pcp_decrypt_file(FILE *in, FILE* out, pcp_key_t *s);
size_t pcp_decrypt_file(FILE *in, FILE* out, pcp_key_t *s, unsigned char *symkey);
size_t pcp_encrypt_file_sym(FILE *in, FILE* out, unsigned char *symkey, int havehead);
size_t pcp_decrypt_file_sym(FILE *in, FILE* out, unsigned char *symkey);
#endif // _HAVE_PCP_CRYPTO_H

8
include/pcp/defines.h
View File

@@ -67,12 +67,16 @@ typedef unsigned int qbyte; // Quad byte = 32 bits
// crypto file format stuff
#define PCP_ASYM_CIPHER 5
#define PCP_BLOCK_CIPHER 23
#define PCP_SYM_CIPHER 23
#define PCP_BLOCK_SIZE 32 * 1024
#define PCP_BLOCK_SIZE_IN (PCP_BLOCK_SIZE) + 16 + crypto_secretbox_NONCEBYTES
#define PCP_ASYM_RECIPIENT_SIZE ((crypto_secretbox_KEYBYTES + crypto_box_ZEROBYTES) - crypto_box_BOXZEROBYTES) + crypto_secretbox_NONCEBYTES
#define PCP_CRYPTO_ADD (crypto_box_ZEROBYTES - crypto_box_BOXZEROBYTES)
#define PCP_ASYM_RECIPIENT_SIZE crypto_secretbox_KEYBYTES + PCP_CRYPTO_ADD + crypto_secretbox_NONCEBYTES
//#define PCP_ASYM_ADD_SENDER_PUB
// used for self encryption only
#define PBP_COMPAT_SALT "qa~t](84z<1t<1oz:ik.@IRNyhG=8q(on9}4#!/_h#a7wqK{Nt$T?W>,mt8NqYq&6U<GB1$,<$j>,rSYI2GRDd:Bcm"
// error handling
extern char *PCP_ERR;
extern byte PCP_ERRSET;