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-rw-r--r--src/PolarSSL++/CryptoKey.cpp149
1 files changed, 149 insertions, 0 deletions
diff --git a/src/PolarSSL++/CryptoKey.cpp b/src/PolarSSL++/CryptoKey.cpp
new file mode 100644
index 000000000..0763c387b
--- /dev/null
+++ b/src/PolarSSL++/CryptoKey.cpp
@@ -0,0 +1,149 @@
+
+// CryptoKey.cpp
+
+// Implements the cCryptoKey class representing a RSA public key in PolarSSL
+
+#include "Globals.h"
+#include "CryptoKey.h"
+
+
+
+
+
+cCryptoKey::cCryptoKey(void)
+{
+ pk_init(&m_Pk);
+ m_CtrDrbg.Initialize("rsa_pubkey", 10);
+}
+
+
+
+
+
+cCryptoKey::cCryptoKey(const AString & a_PublicKeyData)
+{
+ pk_init(&m_Pk);
+ m_CtrDrbg.Initialize("rsa_pubkey", 10);
+ int res = ParsePublic(a_PublicKeyData.data(), a_PublicKeyData.size());
+ if (res != 0)
+ {
+ LOGWARNING("Failed to parse public key: -0x%x", res);
+ ASSERT(!"Cannot parse PubKey");
+ return;
+ }
+}
+
+
+
+
+
+cCryptoKey::cCryptoKey(const AString & a_PrivateKeyData, const AString & a_Password)
+{
+ pk_init(&m_Pk);
+ m_CtrDrbg.Initialize("rsa_privkey", 11);
+ int res = ParsePrivate(a_PrivateKeyData.data(), a_PrivateKeyData.size(), a_Password);
+ if (res != 0)
+ {
+ LOGWARNING("Failed to parse private key: -0x%x", res);
+ ASSERT(!"Cannot parse PubKey");
+ return;
+ }
+}
+
+
+
+
+
+cCryptoKey::~cCryptoKey()
+{
+ pk_free(&m_Pk);
+}
+
+
+
+
+
+int cCryptoKey::Decrypt(const Byte * a_EncryptedData, size_t a_EncryptedLength, Byte * a_DecryptedData, size_t a_DecryptedMaxLength)
+{
+ ASSERT(IsValid());
+
+ size_t DecryptedLen = a_DecryptedMaxLength;
+ int res = pk_decrypt(&m_Pk,
+ a_EncryptedData, a_EncryptedLength,
+ a_DecryptedData, &DecryptedLen, a_DecryptedMaxLength,
+ ctr_drbg_random, m_CtrDrbg.GetInternal()
+ );
+ if (res != 0)
+ {
+ return res;
+ }
+ return (int)DecryptedLen;
+}
+
+
+
+
+
+int cCryptoKey::Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte * a_EncryptedData, size_t a_EncryptedMaxLength)
+{
+ ASSERT(IsValid());
+
+ size_t EncryptedLength = a_EncryptedMaxLength;
+ int res = pk_encrypt(&m_Pk,
+ a_PlainData, a_PlainLength, a_EncryptedData, &EncryptedLength, a_EncryptedMaxLength,
+ ctr_drbg_random, m_CtrDrbg.GetInternal()
+ );
+ if (res != 0)
+ {
+ return res;
+ }
+ return (int)EncryptedLength;
+}
+
+
+
+
+
+
+int cCryptoKey::ParsePublic(const void * a_Data, size_t a_NumBytes)
+{
+ ASSERT(!IsValid()); // Cannot parse a second key
+
+ return pk_parse_public_key(&m_Pk, (const unsigned char *)a_Data, a_NumBytes);
+}
+
+
+
+
+
+
+int cCryptoKey::ParsePrivate(const void * a_Data, size_t a_NumBytes, const AString & a_Password)
+{
+ ASSERT(!IsValid()); // Cannot parse a second key
+
+ if (a_Password.empty())
+ {
+ return pk_parse_key(&m_Pk, (const unsigned char *)a_Data, a_NumBytes, NULL, 0);
+ }
+ else
+ {
+ return pk_parse_key(
+ &m_Pk,
+ (const unsigned char *)a_Data, a_NumBytes,
+ (const unsigned char *)a_Password.c_str(), a_Password.size()
+ );
+ }
+}
+
+
+
+
+
+bool cCryptoKey::IsValid(void) const
+{
+ return (pk_get_type(&m_Pk) != POLARSSL_PK_NONE);
+}
+
+
+
+