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authorTycho <work.tycho+git@gmail.com>2014-02-01 00:31:05 +0100
committerTycho <work.tycho+git@gmail.com>2014-02-01 00:31:05 +0100
commitfec17409d2f566af18bad269fe2c5c372a474ecb (patch)
tree93baa2311e38fddb86a68e550955c261ac96cf3b /src/Crypto.cpp
parentChanged signitures of Several BLockHandler Methods (diff)
parentContributors now match real life, and are alpha-sorted. (diff)
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Diffstat (limited to 'src/Crypto.cpp')
-rw-r--r--src/Crypto.cpp82
1 files changed, 78 insertions, 4 deletions
diff --git a/src/Crypto.cpp b/src/Crypto.cpp
index 2045d0385..7a06d7fa3 100644
--- a/src/Crypto.cpp
+++ b/src/Crypto.cpp
@@ -206,7 +206,7 @@ int cRSAPrivateKey::Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte
ASSERT(!"Invalid a_DecryptedMaxLength!");
return -1;
}
- if (a_PlainLength < m_Rsa.len)
+ if (a_EncryptedMaxLength < m_Rsa.len)
{
LOGD("%s: Invalid a_PlainLength: got %u, exp at least %u",
__FUNCTION__, (unsigned)a_PlainLength, (unsigned)(m_Rsa.len)
@@ -214,16 +214,90 @@ int cRSAPrivateKey::Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte
ASSERT(!"Invalid a_PlainLength!");
return -1;
}
- size_t DecryptedLength;
int res = rsa_pkcs1_encrypt(
- &m_Rsa, ctr_drbg_random, &m_Ctr_drbg, RSA_PUBLIC,
+ &m_Rsa, ctr_drbg_random, &m_Ctr_drbg, RSA_PRIVATE,
a_PlainLength, a_PlainData, a_EncryptedData
);
if (res != 0)
{
return -1;
}
- return (int)DecryptedLength;
+ return (int)m_Rsa.len;
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cPublicKey:
+
+cPublicKey::cPublicKey(const AString & a_PublicKeyDER)
+{
+ pk_init(&m_Pk);
+ if (pk_parse_public_key(&m_Pk, (const Byte *)a_PublicKeyDER.data(), a_PublicKeyDER.size()) != 0)
+ {
+ ASSERT(!"Cannot parse PubKey");
+ return;
+ }
+ InitRnd();
+}
+
+
+
+
+
+cPublicKey::~cPublicKey()
+{
+ pk_free(&m_Pk);
+}
+
+
+
+
+
+int cPublicKey::Decrypt(const Byte * a_EncryptedData, size_t a_EncryptedLength, Byte * a_DecryptedData, size_t a_DecryptedMaxLength)
+{
+ size_t DecryptedLen = a_DecryptedMaxLength;
+ int res = pk_decrypt(&m_Pk,
+ a_EncryptedData, a_EncryptedLength,
+ a_DecryptedData, &DecryptedLen, a_DecryptedMaxLength,
+ ctr_drbg_random, &m_Ctr_drbg
+ );
+ if (res != 0)
+ {
+ return res;
+ }
+ return (int)DecryptedLen;
+}
+
+
+
+
+
+int cPublicKey::Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte * a_EncryptedData, size_t a_EncryptedMaxLength)
+{
+ size_t EncryptedLength = a_EncryptedMaxLength;
+ int res = pk_encrypt(&m_Pk,
+ a_PlainData, a_PlainLength, a_EncryptedData, &EncryptedLength, a_EncryptedMaxLength,
+ ctr_drbg_random, &m_Ctr_drbg
+ );
+ if (res != 0)
+ {
+ return res;
+ }
+ return (int)EncryptedLength;
+}
+
+
+
+
+
+void cPublicKey::InitRnd(void)
+{
+ entropy_init(&m_Entropy);
+ const unsigned char pers[] = "rsa_genkey";
+ ctr_drbg_init(&m_Ctr_drbg, entropy_func, &m_Entropy, pers, sizeof(pers) - 1);
}