C++ (Cpp) SEED_encrypt Examples

Example #1

File: seed_cfb.c Project: LucidOne/Rovio

void SEED_cfb128_encrypt(const unsigned char *in, unsigned char *out,
                         size_t len, const SEED_KEY_SCHEDULE *ks,
                         unsigned char ivec[SEED_BLOCK_SIZE], int *num, int enc)
	{
	int n;
	unsigned char c;

	n = *num;

	if (enc)
		{
		while (len--)
			{
			if (n == 0)
				SEED_encrypt(ivec, ivec, ks);
			ivec[n] = *(out++) = *(in++) ^ ivec[n];
			n = (n+1) % SEED_BLOCK_SIZE;
			}
		}
	else
		{
		while (len--)
			{
			if (n == 0)
				SEED_encrypt(ivec, ivec, ks);
			c = *(in);
			*(out++) = *(in++) ^ ivec[n];
			ivec[n] = c;
			n = (n+1) % SEED_BLOCK_SIZE;
			}
		}

	*num = n;
	}

Example #2

File: seed_ecb.c Project: LucidOne/Rovio

void SEED_ecb_encrypt(const unsigned char *in, unsigned char *out, const SEED_KEY_SCHEDULE *ks, int enc) 
	{
	if (enc)
		SEED_encrypt(in, out, ks);
	else
		SEED_decrypt(in, out, ks);
	}

Example #3

File: seed_ofb.c Project: asdlei00/freebsd

void SEED_ofb128_encrypt(const unsigned char *in, unsigned char *out,
                         size_t len, const SEED_KEY_SCHEDULE *ks,
                         unsigned char ivec[SEED_BLOCK_SIZE], int *num)
{
    int n;

    n = *num;

    while (len--)
    {
        if (n == 0)
            SEED_encrypt(ivec, ivec, ks);
        *(out++) = *(in++) ^ ivec[n];
        n = (n+1) % SEED_BLOCK_SIZE;
    }

    *num = n;
}

Example #4

File: seed_cbc.c Project: GrayKing/Leakfix-on-OpenSSL

void SEED_cbc_encrypt(const unsigned char *in, unsigned char *out,
                      size_t len, const SEED_KEY_SCHEDULE *ks,
                      unsigned char ivec[SEED_BLOCK_SIZE], int enc)
{
    size_t n;
    unsigned char tmp[SEED_BLOCK_SIZE];
    const unsigned char *iv = ivec;

    if (enc) {
        while (len >= SEED_BLOCK_SIZE) {
            for (n = 0; n < SEED_BLOCK_SIZE; ++n)
                out[n] = in[n] ^ iv[n];
            SEED_encrypt(out, out, ks);
            iv = out;
            len -= SEED_BLOCK_SIZE;
            in += SEED_BLOCK_SIZE;
            out += SEED_BLOCK_SIZE;
        }
        if (len) {
            for (n = 0; n < len; ++n)
                out[n] = in[n] ^ iv[n];
            for (n = len; n < SEED_BLOCK_SIZE; ++n)
                out[n] = iv[n];
            SEED_encrypt(out, out, ks);
            iv = out;
        }
        memcpy(ivec, iv, SEED_BLOCK_SIZE);
    } else if (in != out) {     /* decrypt */
        while (len >= SEED_BLOCK_SIZE) {
            SEED_decrypt(in, out, ks);
            for (n = 0; n < SEED_BLOCK_SIZE; ++n)
                out[n] ^= iv[n];
            iv = in;
            len -= SEED_BLOCK_SIZE;
            in += SEED_BLOCK_SIZE;
            out += SEED_BLOCK_SIZE;
        }
        if (len) {
            SEED_decrypt(in, tmp, ks);
            for (n = 0; n < len; ++n)
                out[n] = tmp[n] ^ iv[n];
            iv = in;
        }
        memcpy(ivec, iv, SEED_BLOCK_SIZE);
    } else {                    /* decrypt, overlap */

        while (len >= SEED_BLOCK_SIZE) {
            memcpy(tmp, in, SEED_BLOCK_SIZE);
            SEED_decrypt(in, out, ks);
            for (n = 0; n < SEED_BLOCK_SIZE; ++n)
                out[n] ^= ivec[n];
            memcpy(ivec, tmp, SEED_BLOCK_SIZE);
            len -= SEED_BLOCK_SIZE;
            in += SEED_BLOCK_SIZE;
            out += SEED_BLOCK_SIZE;
        }
        if (len) {
            memcpy(tmp, in, SEED_BLOCK_SIZE);
            SEED_decrypt(tmp, tmp, ks);
            for (n = 0; n < len; ++n)
                out[n] = tmp[n] ^ ivec[n];
            memcpy(ivec, tmp, SEED_BLOCK_SIZE);
        }
    }
}