Class: OpenSSL::HMAC

Inherits:

Object

• Object
• OpenSSL::HMAC

Defined in:

ossl_hmac.c

Class Method Summary

• .digest(digest, key, data) ⇒ aString
• .digest(digest, key, data) ⇒ aString

Instance Method Summary

• #digest ⇒ aString
• #hexdigest ⇒ aString (also: #inspect, #to_s)
• #new(key, digest) ⇒ Object constructor
• #reset ⇒ self
• #update(string) ⇒ self (also: #<<)

Constructor Details

#new(key, digest) ⇒ Object

# File 'ossl_hmac.c', line 66

static VALUE
ossl_hmac_initialize(VALUE self, VALUE key, VALUE digest)
{
    HMAC_CTX *ctx;

    StringValue(key);
    GetHMAC(self, ctx);
    HMAC_Init(ctx, RSTRING_PTR(key), RSTRING_LENINT(key),
		 GetDigestPtr(digest));

    return self;
}

Class Method Details

.digest(digest, key, data) ⇒ aString

Returns:

• (aString)

# File 'ossl_hmac.c', line 193

static VALUE
ossl_hmac_s_digest(VALUE klass, VALUE digest, VALUE key, VALUE data)
{
    unsigned char *buf;
    unsigned int buf_len;

    StringValue(key);
    StringValue(data);
    buf = HMAC(GetDigestPtr(digest), RSTRING_PTR(key), RSTRING_LENINT(key),
	       (unsigned char *)RSTRING_PTR(data), RSTRING_LEN(data), NULL, &buf_len);

    return rb_str_new((const char *)buf, buf_len);
}

.digest(digest, key, data) ⇒ aString

Returns:

• (aString)

# File 'ossl_hmac.c', line 212

static VALUE
ossl_hmac_s_hexdigest(VALUE klass, VALUE digest, VALUE key, VALUE data)
{
    unsigned char *buf;
    char *hexbuf;
    unsigned int buf_len;
    VALUE hexdigest;

    StringValue(key);
    StringValue(data);

    buf = HMAC(GetDigestPtr(digest), RSTRING_PTR(key), RSTRING_LENINT(key),
	       (unsigned char *)RSTRING_PTR(data), RSTRING_LEN(data), NULL, &buf_len);
    if (string2hex(buf, buf_len, &hexbuf, NULL) != 2 * (int)buf_len) {
	ossl_raise(eHMACError, "Cannot convert buf to hexbuf");
    }
    hexdigest = ossl_buf2str(hexbuf, 2 * buf_len);

    return hexdigest;
}

Instance Method Details

#digest ⇒ aString

Returns:

• (aString)

# File 'ossl_hmac.c', line 131

static VALUE
ossl_hmac_digest(VALUE self)
{
    HMAC_CTX *ctx;
    unsigned char *buf;
    unsigned int buf_len;
    VALUE digest;

    GetHMAC(self, ctx);
    hmac_final(ctx, &buf, &buf_len);
    digest = ossl_buf2str((char *)buf, buf_len);

    return digest;
}

#hexdigest ⇒ aString Also known as: inspect, to_s

Returns:

• (aString)

# File 'ossl_hmac.c', line 151

static VALUE
ossl_hmac_hexdigest(VALUE self)
{
    HMAC_CTX *ctx;
    unsigned char *buf;
    char *hexbuf;
    unsigned int buf_len;
    VALUE hexdigest;

    GetHMAC(self, ctx);
    hmac_final(ctx, &buf, &buf_len);
    if (string2hex(buf, buf_len, &hexbuf, NULL) != 2 * (int)buf_len) {
	OPENSSL_free(buf);
	ossl_raise(eHMACError, "Memory alloc error");
    }
    OPENSSL_free(buf);
    hexdigest = ossl_buf2str(hexbuf, 2 * buf_len);

    return hexdigest;
}

#reset ⇒ self

Returns:

• (self)

# File 'ossl_hmac.c', line 177

static VALUE
ossl_hmac_reset(VALUE self)
{
    HMAC_CTX *ctx;

    GetHMAC(self, ctx);
    HMAC_Init(ctx, NULL, 0, NULL);

    return self;
}

#update(string) ⇒ self Also known as: <<

Returns:

• (self)

# File 'ossl_hmac.c', line 99

static VALUE
ossl_hmac_update(VALUE self, VALUE data)
{
    HMAC_CTX *ctx;

    StringValue(data);
    GetHMAC(self, ctx);
    HMAC_Update(ctx, (unsigned char *)RSTRING_PTR(data), RSTRING_LEN(data));

    return self;
}