Class: OpenSSL::Digest::Digest

Inherits:

Object

• Object
• OpenSSL::Digest::Digest

Defined in:

ossl_digest.c

Class Method Summary

• .digest(str, data) ⇒ Object
• .hexdigest(str, data) ⇒ Object

Instance Method Summary

• #==(other) ⇒ Object
• #digest ⇒ Object
• #hexdigest ⇒ Object (also: #inspect, #to_s)
• #initialize(*args) ⇒ Object constructor
• #name ⇒ Object
• #reset ⇒ Object
• #size ⇒ Object
• #update(data) ⇒ Object (also: #<<)

Constructor Details

#initialize(*args) ⇒ Object

# File 'ossl_digest.c', line 80

static VALUE
ossl_digest_initialize(int argc, VALUE *argv, VALUE self)
{
    EVP_MD_CTX *ctx;
    const EVP_MD *md;
    char *name;
    VALUE type, data;

    rb_scan_args(argc, argv, "11", &type, &data);
    StringValue(type);
    if (!NIL_P(data)) StringValue(data);
    name = StringValuePtr(type);
    
    md = EVP_get_digestbyname(name);
    if (!md) {
	ossl_raise(rb_eRuntimeError, "Unsupported digest algorithm (%s).", name);
    }
    GetDigest(self, ctx);
    EVP_DigestInit_ex(ctx, md, NULL);
    
    if (!NIL_P(data)) return ossl_digest_update(self, data);
    return self;
}

Class Method Details

.digest(str, data) ⇒ Object

# File 'ossl_digest.c', line 195

static VALUE
ossl_digest_s_digest(VALUE klass, VALUE str, VALUE data)
{
    VALUE obj = rb_class_new_instance(1, &str, klass);

    ossl_digest_update(obj, data);

    return ossl_digest_digest(obj);
}

.hexdigest(str, data) ⇒ Object

# File 'ossl_digest.c', line 205

static VALUE
ossl_digest_s_hexdigest(VALUE klass, VALUE str, VALUE data)
{
    VALUE obj = rb_class_new_instance(1, &str, klass);

    ossl_digest_update(obj, data);

    return ossl_digest_hexdigest(obj);
}

Instance Method Details

#==(other) ⇒ Object

# File 'ossl_digest.c', line 215

static VALUE
ossl_digest_equal(VALUE self, VALUE other)
{
    EVP_MD_CTX *ctx;
    VALUE str1, str2;

    if (rb_obj_is_kind_of(other, cDigest) == Qtrue) {
	str2 = ossl_digest_digest(other);
    } else {
	StringValue(other);
	str2 = other;
    }
    GetDigest(self, ctx);
    if (RSTRING(str2)->len == EVP_MD_CTX_size(ctx)) {
	str1 = ossl_digest_digest(self);
    } else {
	str1 = ossl_digest_hexdigest(self);
    }
    if (RSTRING(str1)->len == RSTRING(str2)->len
	&& rb_str_cmp(str1, str2) == 0) {
	return Qtrue;
    }

    return Qfalse;
}

#digest ⇒ Object

# File 'ossl_digest.c', line 160

static VALUE
ossl_digest_digest(VALUE self)
{
    EVP_MD_CTX *ctx;
    char *buf;
    int buf_len;
    VALUE digest;
	
    GetDigest(self, ctx);
    digest_final(ctx, &buf, &buf_len);
    digest = ossl_buf2str(buf, buf_len);
	
    return digest;
}

#hexdigest ⇒ Object Also known as: inspect, to_s

# File 'ossl_digest.c', line 175

static VALUE
ossl_digest_hexdigest(VALUE self)
{
    EVP_MD_CTX *ctx;
    char *buf, *hexbuf;
    int buf_len;
    VALUE hexdigest;

    GetDigest(self, ctx);
    digest_final(ctx, &buf, &buf_len);
    if (string2hex(buf, buf_len, &hexbuf, NULL) != 2 * buf_len) {
	OPENSSL_free(buf);
	ossl_raise(eDigestError, "Memory alloc error");
    }
    OPENSSL_free(buf);
    hexdigest = ossl_buf2str(hexbuf, 2 * buf_len);

    return hexdigest;
}

#name ⇒ Object

# File 'ossl_digest.c', line 241

static VALUE
ossl_digest_name(VALUE self)
{
    EVP_MD_CTX *ctx;

    GetDigest(self, ctx);

    return rb_str_new2(EVP_MD_name(EVP_MD_CTX_md(ctx)));
}

#reset ⇒ Object

# File 'ossl_digest.c', line 121

static VALUE
ossl_digest_reset(VALUE self)
{
    EVP_MD_CTX *ctx;

    GetDigest(self, ctx);
    EVP_DigestInit_ex(ctx, EVP_MD_CTX_md(ctx), NULL);

    return self;
}

#size ⇒ Object

# File 'ossl_digest.c', line 251

static VALUE
ossl_digest_size(VALUE self)
{
    EVP_MD_CTX *ctx;

    GetDigest(self, ctx);

    return INT2NUM(EVP_MD_CTX_size(ctx));
}

#update(data) ⇒ Object Also known as: <<

# File 'ossl_digest.c', line 132

VALUE
ossl_digest_update(VALUE self, VALUE data)
{
    EVP_MD_CTX *ctx;

    StringValue(data);
    GetDigest(self, ctx);
    EVP_DigestUpdate(ctx, RSTRING(data)->ptr, RSTRING(data)->len);

    return self;
}