PostgreSQL Source Code: contrib/pgcrypto/pgp-pubdec.c File Reference (original) (raw)

#include "[postgres.h](postgres%5F8h%5Fsource.html)"
#include "[pgp.h](pgp%5F8h%5Fsource.html)"
#include "[px.h](px%5F8h%5Fsource.html)"

Go to the source code of this file.

◆ check_eme_pkcs1_v15()

Definition at line 42 of file pgp-pubdec.c.

43{

46 int rnd = 0;

47

48 if (len < 1 + 8 + 1)

49 return NULL;

50

51 if (*p++ != 2)

52 return NULL;

53

54 while (p < data_end && *p)

55 {

56 p++;

57 rnd++;

58 }

59

60 if (p == data_end)

61 return NULL;

62 if (*p != 0)

63 return NULL;

64 if (rnd < 8)

65 return NULL;

66 return p + 1;

67}

References data, and len.

Referenced by pgp_parse_pubenc_sesskey().

◆ control_cksum()

Definition at line 74 of file pgp-pubdec.c.

75{

76 int i;

77 unsigned my_cksum,

78 got_cksum;

79

80 if (msglen < 3)

82

83 my_cksum = 0;

84 for (i = 1; i < msglen - 2; i++)

85 my_cksum += msg[i];

86 my_cksum &= 0xFFFF;

87 got_cksum = ((unsigned) (msg[msglen - 2]) << 8) + msg[msglen - 1];

88 if (my_cksum != got_cksum)

89 {

90 px_debug("pubenc cksum failed");

92 }

93 return 0;

94}

void px_debug(const char *fmt,...)

#define PXE_PGP_WRONG_KEY

References i, px_debug(), and PXE_PGP_WRONG_KEY.

Referenced by pgp_parse_pubenc_sesskey().

◆ decrypt_elgamal()

◆ decrypt_rsa()

◆ pgp_parse_pubenc_sesskey()

Definition at line 150 of file pgp-pubdec.c.

151{

152 int ver;

153 int algo;

154 int res;

158 int msglen;

160

162 if (pk == NULL)

163 {

166 }

167

169 if (ver != 3)

170 {

171 px_debug("unknown pubenc_sesskey pkt ver=%d", ver);

173 }

174

175

176

177

179 if (res < 0)

180 return res;

181 if (memcmp(key_id, any_key, 8) != 0

182 && memcmp(key_id, pk->key_id, 8) != 0)

183 {

184 px_debug("key_id's does not match");

186 }

187

188

189

190

192 switch (algo)

193 {

196 break;

200 break;

201 default:

203 }

204 if (res < 0)

205 return res;

206

207

208

209

211 if (msg == NULL)

212 {

213 px_debug("check_eme_pkcs1_v15 failed");

215 goto out;

216 }

217 msglen = m->bytes - (msg - m->data);

218

220 if (res < 0)

221 goto out;

222

223

224

225

229

230out:

232 if (res < 0)

233 return res;

235}

int pullf_read_fixed(PullFilter *src, int len, uint8 *dst)

int pgp_expect_packet_end(PullFilter *pkt)

static int decrypt_rsa(PGP_PubKey *pk, PullFilter *pkt, PGP_MPI **m_p)

static const uint8 any_key[]

static int decrypt_elgamal(PGP_PubKey *pk, PullFilter *pkt, PGP_MPI **m_p)

static uint8 * check_eme_pkcs1_v15(uint8 *data, int len)

static int control_cksum(uint8 *msg, int msglen)

#define PXE_PGP_CORRUPT_DATA

#define PXE_PGP_UNKNOWN_PUBALGO

uint8 sess_key[PGP_MAX_KEY]

References any_key, PGP_MPI::bytes, check_eme_pkcs1_v15(), PGP_Context::cipher_algo, control_cksum(), PGP_MPI::data, decrypt_elgamal(), decrypt_rsa(), GETBYTE, PGP_PubKey::key_id, pgp_expect_packet_end(), pgp_mpi_free(), PGP_PUB_ELG_ENCRYPT, PGP_PUB_RSA_ENCRYPT, PGP_PUB_RSA_ENCRYPT_SIGN, PGP_Context::pub_key, pullf_read_fixed(), px_debug(), PXE_BUG, PXE_PGP_CORRUPT_DATA, PXE_PGP_UNKNOWN_PUBALGO, PXE_PGP_WRONG_KEY, PGP_Context::sess_key, and PGP_Context::sess_key_len.

Referenced by pgp_decrypt().

◆ any_key