PostgreSQL Source Code git master
pgp-mpi.c File Reference
#include "postgres.h"
#include "pgp.h"
#include "px.h"
Include dependency graph for pgp-mpi.c:

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Functions

int pgp_mpi_alloc (int bits, PGP_MPI **mpi)
 
int pgp_mpi_create (uint8 *data, int bits, PGP_MPI **mpi)
 
int pgp_mpi_free (PGP_MPI *mpi)
 
int pgp_mpi_read (PullFilter *src, PGP_MPI **mpi)
 
int pgp_mpi_write (PushFilter *dst, PGP_MPI *n)
 
int pgp_mpi_hash (PX_MD *md, PGP_MPI *n)
 
unsigned pgp_mpi_cksum (unsigned cksum, PGP_MPI *n)
 

Function Documentation

◆ pgp_mpi_alloc()

int pgp_mpi_alloc ( int  bits,
PGP_MPI **  mpi 
)

Definition at line 37 of file pgp-mpi.c.

38{
39 PGP_MPI *n;
40 int len = (bits + 7) / 8;
41
42 if (bits < 0 || bits > 0xFFFF)
43 {
44 px_debug("pgp_mpi_alloc: unreasonable request: bits=%d", bits);
46 }
47 n = palloc(sizeof(*n) + len);
48 n->bits = bits;
49 n->bytes = len;
50 n->data = (uint8 *) (n) + sizeof(*n);
51 *mpi = n;
52 return 0;
53}
uint8_t uint8
Definition: c.h:500
void * palloc(Size size)
Definition: mcxt.c:1317
const void size_t len
void px_debug(const char *fmt,...)
Definition: px.c:149
#define PXE_PGP_CORRUPT_DATA
Definition: px.h:67
Definition: pgp.h:180
int bits
Definition: pgp.h:182
int bytes
Definition: pgp.h:183
uint8 * data
Definition: pgp.h:181

References PGP_MPI::bits, PGP_MPI::bytes, PGP_MPI::data, len, palloc(), px_debug(), and PXE_PGP_CORRUPT_DATA.

Referenced by bn_to_mpi(), pgp_mpi_create(), and pgp_mpi_read().

◆ pgp_mpi_cksum()

unsigned pgp_mpi_cksum ( unsigned  cksum,
PGP_MPI n 
)

Definition at line 132 of file pgp-mpi.c.

133{
134 int i;
135
136 cksum += n->bits >> 8;
137 cksum += n->bits & 0xFF;
138 for (i = 0; i < n->bytes; i++)
139 cksum += n->data[i];
140
141 return cksum & 0xFFFF;
142}
int i
Definition: isn.c:74

References PGP_MPI::bits, PGP_MPI::bytes, PGP_MPI::data, and i.

Referenced by check_key_cksum().

◆ pgp_mpi_create()

int pgp_mpi_create ( uint8 data,
int  bits,
PGP_MPI **  mpi 
)

Definition at line 56 of file pgp-mpi.c.

57{
58 int res;
59 PGP_MPI *n;
60
61 res = pgp_mpi_alloc(bits, &n);
62 if (res < 0)
63 return res;
64 memcpy(n->data, data, n->bytes);
65 *mpi = n;
66 return 0;
67}
const void * data
int pgp_mpi_alloc(int bits, PGP_MPI **mpi)
Definition: pgp-mpi.c:37

References PGP_MPI::bytes, PGP_MPI::data, data, and pgp_mpi_alloc().

Referenced by create_secmsg().

◆ pgp_mpi_free()

int pgp_mpi_free ( PGP_MPI mpi)

Definition at line 70 of file pgp-mpi.c.

71{
72 if (mpi == NULL)
73 return 0;
74 px_memset(mpi, 0, sizeof(*mpi) + mpi->bytes);
75 pfree(mpi);
76 return 0;
77}
void pfree(void *pointer)
Definition: mcxt.c:1524
void px_memset(void *ptr, int c, size_t len)
Definition: px.c:123

References PGP_MPI::bytes, pfree(), and px_memset().

Referenced by bn_to_mpi(), decrypt_elgamal(), decrypt_rsa(), encrypt_and_write_elgamal(), encrypt_and_write_rsa(), pgp_key_free(), pgp_mpi_read(), and pgp_parse_pubenc_sesskey().

◆ pgp_mpi_hash()

int pgp_mpi_hash ( PX_MD md,
PGP_MPI n 
)

Definition at line 119 of file pgp-mpi.c.

120{
121 uint8 buf[2];
122
123 buf[0] = n->bits >> 8;
124 buf[1] = n->bits & 0xFF;
125 px_md_update(md, buf, 2);
126 px_md_update(md, n->data, n->bytes);
127
128 return 0;
129}
static char * buf
Definition: pg_test_fsync.c:72
#define px_md_update(md, data, dlen)
Definition: px.h:205

References PGP_MPI::bits, buf, PGP_MPI::bytes, PGP_MPI::data, and px_md_update.

Referenced by calc_key_id(), and check_key_sha1().

◆ pgp_mpi_read()

int pgp_mpi_read ( PullFilter src,
PGP_MPI **  mpi 
)

Definition at line 80 of file pgp-mpi.c.

81{
82 int res;
83 uint8 hdr[2];
84 int bits;
85 PGP_MPI *n;
86
87 res = pullf_read_fixed(src, 2, hdr);
88 if (res < 0)
89 return res;
90 bits = ((unsigned) hdr[0] << 8) + hdr[1];
91
92 res = pgp_mpi_alloc(bits, &n);
93 if (res < 0)
94 return res;
95
96 res = pullf_read_fixed(src, n->bytes, n->data);
97 if (res < 0)
98 pgp_mpi_free(n);
99 else
100 *mpi = n;
101 return res;
102}
int pullf_read_fixed(PullFilter *src, int len, uint8 *dst)
Definition: mbuf.c:301
int pgp_mpi_free(PGP_MPI *mpi)
Definition: pgp-mpi.c:70

References PGP_MPI::bytes, PGP_MPI::data, pgp_mpi_alloc(), pgp_mpi_free(), and pullf_read_fixed().

Referenced by _pgp_read_public_key(), decrypt_elgamal(), decrypt_rsa(), and process_secret_key().

◆ pgp_mpi_write()

int pgp_mpi_write ( PushFilter dst,
PGP_MPI n 
)

Definition at line 105 of file pgp-mpi.c.

106{
107 int res;
108 uint8 buf[2];
109
110 buf[0] = n->bits >> 8;
111 buf[1] = n->bits & 0xFF;
112 res = pushf_write(dst, buf, 2);
113 if (res >= 0)
114 res = pushf_write(dst, n->data, n->bytes);
115 return res;
116}
int pushf_write(PushFilter *mp, const uint8 *data, int len)
Definition: mbuf.c:439

References PGP_MPI::bits, buf, PGP_MPI::bytes, PGP_MPI::data, and pushf_write().

Referenced by encrypt_and_write_elgamal(), and encrypt_and_write_rsa().