74 lines
1.3 KiB
C++
74 lines
1.3 KiB
C++
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// PublicKey.cpp
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// Implements the cPublicKey class representing a RSA public key in PolarSSL
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#include "Globals.h"
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#include "PublicKey.h"
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cPublicKey::cPublicKey(const AString & a_PublicKeyDER)
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{
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pk_init(&m_Pk);
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if (pk_parse_public_key(&m_Pk, (const Byte *)a_PublicKeyDER.data(), a_PublicKeyDER.size()) != 0)
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{
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ASSERT(!"Cannot parse PubKey");
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return;
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}
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m_CtrDrbg.Initialize("rsa_pubkey", 10);
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}
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cPublicKey::~cPublicKey()
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{
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pk_free(&m_Pk);
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}
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int cPublicKey::Decrypt(const Byte * a_EncryptedData, size_t a_EncryptedLength, Byte * a_DecryptedData, size_t a_DecryptedMaxLength)
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{
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size_t DecryptedLen = a_DecryptedMaxLength;
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int res = pk_decrypt(&m_Pk,
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a_EncryptedData, a_EncryptedLength,
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a_DecryptedData, &DecryptedLen, a_DecryptedMaxLength,
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ctr_drbg_random, m_CtrDrbg.GetInternal()
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);
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if (res != 0)
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{
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return res;
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}
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return (int)DecryptedLen;
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}
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int cPublicKey::Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte * a_EncryptedData, size_t a_EncryptedMaxLength)
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{
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size_t EncryptedLength = a_EncryptedMaxLength;
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int res = pk_encrypt(&m_Pk,
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a_PlainData, a_PlainLength, a_EncryptedData, &EncryptedLength, a_EncryptedMaxLength,
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ctr_drbg_random, m_CtrDrbg.GetInternal()
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);
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if (res != 0)
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{
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return res;
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}
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return (int)EncryptedLength;
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}
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