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don't pass BN_CTX to encrypt/decrypt functions

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orignal 2021-08-31 18:51:40 -04:00
parent c45e202fab
commit bb518d3d51
19 changed files with 81 additions and 85 deletions
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17
libi2pd/Crypto.cpp
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@ -398,8 +398,9 @@ namespace crypto
}
// ElGamal
void ElGamalEncrypt (const uint8_t * key, const uint8_t * data, uint8_t * encrypted, BN_CTX * ctx, bool zeroPadding)
void ElGamalEncrypt (const uint8_t * key, const uint8_t * data, uint8_t * encrypted, bool zeroPadding)
{
BN_CTX * ctx = BN_CTX_new ();
BN_CTX_start (ctx);
// everything, but a, because a might come from table
BIGNUM * k = BN_CTX_get (ctx);
@ -449,11 +450,12 @@ namespace crypto
}
BN_free (a);
BN_CTX_end (ctx);
BN_CTX_free (ctx);
}
bool ElGamalDecrypt (const uint8_t * key, const uint8_t * encrypted,
uint8_t * data, BN_CTX * ctx)
bool ElGamalDecrypt (const uint8_t * key, const uint8_t * encrypted, uint8_t * data)
{
BN_CTX * ctx = BN_CTX_new ();
BN_CTX_start (ctx);
BIGNUM * x = BN_CTX_get (ctx), * a = BN_CTX_get (ctx), * b = BN_CTX_get (ctx);
BN_bin2bn (key, 256, x);
@ -466,6 +468,7 @@ namespace crypto
uint8_t m[255];
bn2buf (b, m, 255);
BN_CTX_end (ctx);
BN_CTX_free (ctx);
uint8_t hash[32];
SHA256 (m + 33, 222, hash);
if (memcmp (m + 1, hash, 32))
@ -499,8 +502,9 @@ namespace crypto
}
// ECIES
void ECIESEncrypt (const EC_GROUP * curve, const EC_POINT * key, const uint8_t * data, uint8_t * encrypted, BN_CTX * ctx, bool zeroPadding)
void ECIESEncrypt (const EC_GROUP * curve, const EC_POINT * key, const uint8_t * data, uint8_t * encrypted, bool zeroPadding)
{
BN_CTX * ctx = BN_CTX_new ();
BN_CTX_start (ctx);
BIGNUM * q = BN_CTX_get (ctx);
EC_GROUP_get_order(curve, q, ctx);
@ -550,11 +554,13 @@ namespace crypto
encryption.Encrypt (m, 256, encrypted + 256);
EC_POINT_free (p);
BN_CTX_end (ctx);
BN_CTX_free (ctx);
}
bool ECIESDecrypt (const EC_GROUP * curve, const BIGNUM * key, const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx)
bool ECIESDecrypt (const EC_GROUP * curve, const BIGNUM * key, const uint8_t * encrypted, uint8_t * data)
{
bool ret = true;
BN_CTX * ctx = BN_CTX_new ();
BN_CTX_start (ctx);
BIGNUM * q = BN_CTX_get (ctx);
EC_GROUP_get_order(curve, q, ctx);
@ -599,6 +605,7 @@ namespace crypto
EC_POINT_free (p);
BN_CTX_end (ctx);
BN_CTX_free (ctx);
return ret;
}