Class: CoBreak::Cipher::Base64

Inherits:
Object
  • Object
show all
Defined in:
ext/cobreak/cobreak_cipher.c

Class Method Summary collapse

Class Method Details

.decode(full) ⇒ Object 



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# File 'ext/cobreak/cobreak_cipher.c', line 149

VALUE b64_decode(VALUE self, VALUE full){
//	check_Type(full, T_STRING);
	int c, phase, i;
	unsigned char in[4];
	char *p;

	char *myb64 = RSTRING_PTR(full);
	char strb64[1024] = "";
	char *clrdst = strb64;
	clrdst[0] = '\0';
	phase = 0; i=0;
	while(myb64[i]){
		c = (int) myb64[i];
		if(c == '='){
			decodeblock64(in, clrdst);
			break;
		}
		p = strchr(b64, c);
		if(p){
			in[phase] = p - b64;
			phase = (phase + 1) % 4;
			if(phase == 0){
				decodeblock64(in, clrdst);
				in[0]=in[1]=in[2]=in[3]=0;
			}
		}
		i++;
	}
	return rb_str_new2(strb64);
}

.encode(full) ⇒ Object

Define method for class Base64



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# File 'ext/cobreak/cobreak_cipher.c', line 190

VALUE b64_encode(VALUE self, VALUE full){
//	check_Type(full, T_STRING);
	unsigned char in[3];
	int i, len = 0;
	int j = 0;
	//char b64dst[1024];
	char *strb64 = RSTRING_PTR(full);
	char myb64[1024] = "";
	char *b64dst = myb64;
	b64dst[0] = '\0';
	while(strb64[j]){
		len = 0;
		for(i=0; i<3; i++){
			in[i] = (unsigned char) strb64[j];
			if(strb64[j]) {
				len++; j++;
			}
			else in[i] = 0;
		}
		if(len){
			encodeblock64(in, b64dst, len);
		}
	}
	return rb_str_new2(b64dst);
}