Class: Digest::Blake2b

Inherits:
Object
  • Object
show all
Defined in:
lib/digest/blake2b.rb,
lib/digest/blake2b/key.rb,
lib/digest/blake2b/version.rb,
ext/digest/blake2b/ext/rbext.c

Defined Under Namespace

Classes: Key

Constant Summary collapse

VERSION = 
'0.0.5'

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.bytes(input, key = Blake2b::Key.none, out_len = 32) ⇒ Object 



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# File 'lib/digest/blake2b.rb', line 14

def self.bytes(input, key = Blake2b::Key.none, out_len = 32)
  check_if_valid!(input, key, out_len)
  Blake2b.new(out_len, key).digest(input, :to_bytes)
end

.hex(input, key = Blake2b::Key.none, out_len = 32) ⇒ Object 



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# File 'lib/digest/blake2b.rb', line 9

def self.hex(input, key = Blake2b::Key.none, out_len = 32)
  check_if_valid!(input, key, out_len)
  Blake2b.new(out_len, key).digest(input, :to_hex)
end

Instance Method Details

#digest(_input, _representation) ⇒ Object 



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# File 'ext/digest/blake2b/ext/rbext.c', line 61

VALUE m_blake2_digest(VALUE self, VALUE _input, VALUE _representation) {
  Blake2 *blake2;

  char *input           = RSTRING_PTR(_input);
  uint64_t input_length = RSTRING_LEN(_input);
  unsigned int i;

  Data_Get_Struct(self, Blake2, blake2);

  blake2b(blake2->output, blake2->output_length, input, input_length,
      blake2->key_bytes, blake2->key_length);

  VALUE result;

  if(_representation == blake2->to_bytes) {
    result = rb_ary_new2(blake2->output_length);

    for(i = 0; i < blake2->output_length; i++) {
      rb_ary_push(result, INT2NUM(blake2->output[i]));
    }
  } else if(_representation == blake2->to_hex) {
    unsigned long ary_len = blake2->output_length * (unsigned)sizeof(char) * 2;
    char *c_str = (char*)malloc(ary_len + 1);

    for(i = 0; i < blake2->output_length; i++) {
      sprintf(c_str + (i * 2), "%02x", blake2->output[i]);
    }
    c_str[ary_len] = 0;

    result = rb_str_new(c_str, ary_len);

    if((unsigned long)RSTRING_LEN(result) != ary_len) {
      rb_raise(rb_eRuntimeError, "m_blake2_digest: sizes don't match. Ary: %lu != %lu", RSTRING_LEN(result), ary_len);
    }

    free(c_str);
  } else {
    rb_raise(rb_eArgError, "unknown representation :%"PRIsVALUE"", _representation);
  }

  return result;
}