cAES Class Reference

#include <crypto.h>

Inheritance diagram for cAES:

List of all members.

Public Member Functions
	cAES (void)
void	SetKey (const unsigned char *key)
bool	Decrypt (unsigned char *data, int len) const
bool	Decrypt (const unsigned char *data, int len, unsigned char *decrypt) const
int	Encrypt (const unsigned char *data, int len, unsigned char *crypt) const

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Detailed Description

Definition at line 89 of file crypto.h.

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Constructor & Destructor Documentation

cAES::cAES

(

void

)

Definition at line 409 of file crypto.c.

{
  active=false;
}

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Member Function Documentation

bool cAES::Decrypt	(	unsigned char *	data,
		int	len
	)		const

Definition at line 431 of file crypto.c.

References AES_decrypt(), and i.

Referenced by cSmartCardViaccess::Decode(), cCmd0cCrypt::Decrypt(), cCardClientCamd35::RecvBlock(), cCardClientCommon::RecvMsg(), and cTPSDecrypt::TpsDecrypt().

{
  if(active) {
    for(int i=0; i<len; i+=16) AES_decrypt(data+i,data+i,(const AES_KEY *)&dkey);
    return true;
    }
  return false;
}

bool cAES::Decrypt	(	const unsigned char *	data,
		int	len,
		unsigned char *	decrypt
	)		const

Definition at line 440 of file crypto.c.

References AES_decrypt(), and i.

{
  if(active) {
    for(int i=0; i<len; i+=16) AES_decrypt(data+i,decrypt+i,(const AES_KEY *)&dkey);
    return true;
    }
  return false;
}

int cAES::Encrypt	(	const unsigned char *	data,
		int	len,
		unsigned char *	crypt
	)		const

Definition at line 421 of file crypto.c.

References AES_encrypt(), and i.

Referenced by cCardClientCamd35::SendBlock(), and cCardClientCommon::SendMsg().

{
  if(active) {
    len=(len+15)&(~15); // pad up to a multiple of 16
    for(int i=0; i<len; i+=16) AES_encrypt(data+i,crypt+i,(const AES_KEY *)&ekey);
    return len;
    }
  return -1;
}

void cAES::SetKey

(

const unsigned char *

key

)

Definition at line 414 of file crypto.c.

References AES_set_decrypt_key(), and AES_set_encrypt_key().

Referenced by cSmartCardViaccess::Init(), cCardClientCommon::ParseKeyConfig(), cCardClientCamd35::ParseUserConfig(), cCmd0cCrypt::SetKey(), and cTPSDecrypt::TpsDecrypt().

{
  AES_set_decrypt_key(key,128,&dkey);
  AES_set_encrypt_key(key,128,&ekey);
  active=true;
}

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The documentation for this class was generated from the following files:

• sc/PLUGINS/src/sc-src/crypto.h
• sc/PLUGINS/src/sc-src/crypto.c