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Class: OpenSSL::PKey::PKey

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
DH, DSA, EC, RSA
Inherits: Object
Defined in: ext/openssl/ossl_pkey_dh.c,
ext/openssl/ossl_pkey.c,
ext/openssl/ossl_pkey_dsa.c,
ext/openssl/ossl_pkey_ec.c,
ext/openssl/ossl_pkey_rsa.c

Overview

An abstract class that bundles signature creation (PKey#sign) and validation (PKey#verify) that is common to all implementations except DH

Class Method Summary

  • PKeyClass.new ⇒ self constructor

    Because PKey is an abstract class, actually calling this method explicitly will raise a NotImplementedError.

Instance Method Summary

Constructor Details

PKeyClass.new ⇒ self

Because PKey is an abstract class, actually calling this method explicitly will raise a NotImplementedError.

[ GitHub ] 

  


# File 'ext/openssl/ossl_pkey.c', line 586



static VALUE
ossl_pkey_initialize(VALUE self)
{
    if (rb_obj_is_instance_of(self, cPKey)) {
	ossl_raise(rb_eTypeError, "OpenSSL::PKey::PKey can't be instantiated directly");
    }
    return self;
}


  







Instance Method Details



  

    #compare?(another_pkey)  ⇒ Boolean   



  

    

Used primarily to check if an X509::Certificate#public_key compares to its private key.



Example



x509 = OpenSSL::X509::Certificate.new(pem_encoded_certificate)
rsa_key = OpenSSL::PKey::RSA.new(pem_encoded_private_key)

rsa_key.compare?(x509.public_key) => true | false


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 864



static VALUE
ossl_pkey_compare(VALUE self, VALUE other)
{
    int ret;
    EVP_PKEY *selfPKey;
    EVP_PKEY *otherPKey;

    GetPKey(self, selfPKey);
    GetPKey(other, otherPKey);

    /* Explicitly check the key type given EVP_PKEY_ASN1_METHOD(3)
     * docs param_cmp could return any negative number.
     */
    if (EVP_PKEY_id(selfPKey) != EVP_PKEY_id(otherPKey))
        ossl_raise(rb_eTypeError, "cannot match different PKey types");

    ret = EVP_PKEY_eq(selfPKey, otherPKey);

    if (ret == 0)
        return Qfalse;
    else if (ret == 1)
        return Qtrue;
    else
        ossl_raise(ePKeyError, "EVP_PKEY_eq");
}


  








  

    #decrypt(data [, options])  ⇒ String   



  

    

Performs a public key decryption operation using pkey.



See #encrypt for a description of the parameters and an example.



Added in version 3.0. See also the man page EVP_PKEY_decrypt(3).


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 1451



static VALUE
ossl_pkey_decrypt(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    EVP_PKEY_CTX *ctx;
    VALUE data, options, str;
    size_t outlen;
    int state;

    GetPKey(self, pkey);
    rb_scan_args(argc, argv, "11", &data, &options);
    StringValue(data);

    ctx = EVP_PKEY_CTX_new(pkey, /* engine */NULL);
    if (!ctx)
        ossl_raise(ePKeyError, "EVP_PKEY_CTX_new");
    if (EVP_PKEY_decrypt_init(ctx) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_decrypt_init");
    }
    if (!NIL_P(options)) {
        pkey_ctx_apply_options(ctx, options, &state);
        if (state) {
            EVP_PKEY_CTX_free(ctx);
            rb_jump_tag(state);
        }
    }
    if (EVP_PKEY_decrypt(ctx, NULL, &outlen,
                         (unsigned char *)RSTRING_PTR(data),
                         RSTRING_LEN(data)) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_decrypt");
    }
    if (outlen > LONG_MAX) {
        EVP_PKEY_CTX_free(ctx);
        rb_raise(ePKeyError, "decrypted data would be too large");
    }
    str = ossl_str_new(NULL, (long)outlen, &state);
    if (state) {
        EVP_PKEY_CTX_free(ctx);
        rb_jump_tag(state);
    }
    if (EVP_PKEY_decrypt(ctx, (unsigned char *)RSTRING_PTR(str), &outlen,
                         (unsigned char *)RSTRING_PTR(data),
                         RSTRING_LEN(data)) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_decrypt");
    }
    EVP_PKEY_CTX_free(ctx);
    rb_str_set_len(str, outlen);
    return str;
}


  








  

    #derive(peer_pkey)  ⇒ String   



  

    

Derives a shared secret from pkey and peer_pkey. pkey must contain the private components, peer_pkey must contain the public components.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 1321



static VALUE
ossl_pkey_derive(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey, *peer_pkey;
    EVP_PKEY_CTX *ctx;
    VALUE peer_pkey_obj, str;
    size_t keylen;
    int state;

    GetPKey(self, pkey);
    rb_scan_args(argc, argv, "1", &peer_pkey_obj);
    GetPKey(peer_pkey_obj, peer_pkey);

    ctx = EVP_PKEY_CTX_new(pkey, /* engine */NULL);
    if (!ctx)
        ossl_raise(ePKeyError, "EVP_PKEY_CTX_new");
    if (EVP_PKEY_derive_init(ctx) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_derive_init");
    }
    if (EVP_PKEY_derive_set_peer(ctx, peer_pkey) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_derive_set_peer");
    }
    if (EVP_PKEY_derive(ctx, NULL, &keylen) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_derive");
    }
    if (keylen > LONG_MAX)
        rb_raise(ePKeyError, "derived key would be too large");
    str = ossl_str_new(NULL, (long)keylen, &state);
    if (state) {
        EVP_PKEY_CTX_free(ctx);
        rb_jump_tag(state);
    }
    if (EVP_PKEY_derive(ctx, (unsigned char *)RSTRING_PTR(str), &keylen) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_derive");
    }
    EVP_PKEY_CTX_free(ctx);
    rb_str_set_len(str, keylen);
    return str;
}


  








  

    #encrypt(data [, options])  ⇒ String   



  

    

Performs a public key encryption operation using pkey.



See #decrypt for the reverse operation.



Added in version 3.0. See also the man page EVP_PKEY_encrypt(3).


data



A String to be encrypted.


options



A Hash that contains algorithm specific control operations to OpenSSL. See OpenSSL’s man page EVP_PKEY_CTX_ctrl_str(3) for details.





Example:



pkey = OpenSSL::PKey.generate_key("RSA", rsa_keygen_bits: 2048)
data = "secret data"
encrypted = pkey.encrypt(data, rsa_padding_mode: "oaep")
decrypted = pkey.decrypt(data, rsa_padding_mode: "oaep")
p decrypted #=> "secret data"


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 1388



static VALUE
ossl_pkey_encrypt(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    EVP_PKEY_CTX *ctx;
    VALUE data, options, str;
    size_t outlen;
    int state;

    GetPKey(self, pkey);
    rb_scan_args(argc, argv, "11", &data, &options);
    StringValue(data);

    ctx = EVP_PKEY_CTX_new(pkey, /* engine */NULL);
    if (!ctx)
        ossl_raise(ePKeyError, "EVP_PKEY_CTX_new");
    if (EVP_PKEY_encrypt_init(ctx) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_encrypt_init");
    }
    if (!NIL_P(options)) {
        pkey_ctx_apply_options(ctx, options, &state);
        if (state) {
            EVP_PKEY_CTX_free(ctx);
            rb_jump_tag(state);
        }
    }
    if (EVP_PKEY_encrypt(ctx, NULL, &outlen,
                         (unsigned char *)RSTRING_PTR(data),
                         RSTRING_LEN(data)) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_encrypt");
    }
    if (outlen > LONG_MAX) {
        EVP_PKEY_CTX_free(ctx);
        rb_raise(ePKeyError, "encrypted data would be too large");
    }
    str = ossl_str_new(NULL, (long)outlen, &state);
    if (state) {
        EVP_PKEY_CTX_free(ctx);
        rb_jump_tag(state);
    }
    if (EVP_PKEY_encrypt(ctx, (unsigned char *)RSTRING_PTR(str), &outlen,
                         (unsigned char *)RSTRING_PTR(data),
                         RSTRING_LEN(data)) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_encrypt");
    }
    EVP_PKEY_CTX_free(ctx);
    rb_str_set_len(str, outlen);
    return str;
}


  








  

    #initialize_copy(other)  
  

  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 596



static VALUE
ossl_pkey_initialize_copy(VALUE self, VALUE other)
{
    EVP_PKEY *pkey, *pkey_other;

    TypedData_Get_Struct(self, EVP_PKEY, &ossl_evp_pkey_type, pkey);
    TypedData_Get_Struct(other, EVP_PKEY, &ossl_evp_pkey_type, pkey_other);
    if (pkey)
        rb_raise(rb_eTypeError, "pkey already initialized");
    if (pkey_other) {
        pkey = EVP_PKEY_dup(pkey_other);
        if (!pkey)
            ossl_raise(ePKeyError, "EVP_PKEY_dup");
        RTYPEDDATA_DATA(self) = pkey;
    }
    return self;
}


  








  

    #inspect  ⇒ String   



  

    

Returns a string describing the PKey object.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 638



static VALUE
ossl_pkey_inspect(VALUE self)
{
    EVP_PKEY *pkey;
    int nid;

    GetPKey(self, pkey);
    nid = EVP_PKEY_id(pkey);
    return rb_sprintf("#<%"PRIsVALUE":%p oid=%s>",
                      rb_class_name(CLASS_OF(self)), (void *)self,
                      OBJ_nid2sn(nid));
}


  








  

    #oid  ⇒ String   



  

    

Returns the short name of the OID associated with pkey.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 621



static VALUE
ossl_pkey_oid(VALUE self)
{
    EVP_PKEY *pkey;
    int nid;

    GetPKey(self, pkey);
    nid = EVP_PKEY_id(pkey);
    return rb_str_new_cstr(OBJ_nid2sn(nid));
}


  








  

    

      #private_to_der  ⇒ String 
      #private_to_der(cipher, password)  ⇒ String 
    

  



  

    

Serializes the private key to DER-encoded PKCS #8 format. If called without arguments, unencrypted PKCS #8 PrivateKeyInfo format is used. If called with a cipher name and a password, PKCS #8 EncryptedPrivateKeyInfo format with PBES2 encryption scheme is used.


  





  


  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 783



static VALUE
ossl_pkey_private_to_der(int argc, VALUE *argv, VALUE self)
{
    return do_pkcs8_export(argc, argv, self, 1);
}


  








  

    

      #private_to_pem  ⇒ String 
      #private_to_pem(cipher, password)  ⇒ String 
    

  



  

    

Serializes the private key to PEM-encoded PKCS #8 format. See #private_to_der for more details.


  





  


  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 797



static VALUE
ossl_pkey_private_to_pem(int argc, VALUE *argv, VALUE self)
{
    return do_pkcs8_export(argc, argv, self, 0);
}


  








  

    #public_to_der  ⇒ String   



  

    

Serializes the public key to DER-encoded X.509 SubjectPublicKeyInfo format.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 834



static VALUE
ossl_pkey_public_to_der(VALUE self)
{
    return ossl_pkey_export_spki(self, 1);
}


  








  

    #public_to_pem  ⇒ String   



  

    

Serializes the public key to PEM-encoded X.509 SubjectPublicKeyInfo format.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 846



static VALUE
ossl_pkey_public_to_pem(VALUE self)
{
    return ossl_pkey_export_spki(self, 0);
}


  








  

    #sign(digest, data [, options])  ⇒ String   



  

    

Hashes and signs the data using a message digest algorithm digest and a private key pkey.



See #verify for the verification operation.



See also the man page EVP_DigestSign(3).


digest



A String that represents the message digest algorithm name, or nil if the PKey type requires no digest algorithm. For backwards compatibility, this can be an instance of OpenSSL::Digest. Its state will not affect the signature.


data



A String. The data to be hashed and signed.


options



A Hash that contains algorithm specific control operations to OpenSSL. See OpenSSL’s man page EVP_PKEY_CTX_ctrl_str(3) for details. options parameter was added in version 3.0.





Example:



data = "Sign me!"
pkey = OpenSSL::PKey.generate_key("RSA", rsa_keygen_bits: 2048)
signopts = { rsa_padding_mode: "pss" }
signature = pkey.sign("SHA256", data, signopts)

# Creates a copy of the RSA key pkey, but without the private components
pub_key = pkey.public_key
puts pub_key.verify("SHA256", signature, data, signopts) # => true


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 923



static VALUE
ossl_pkey_sign(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    VALUE digest, data, options, sig;
    const EVP_MD *md = NULL;
    EVP_MD_CTX *ctx;
    EVP_PKEY_CTX *pctx;
    size_t siglen;
    int state;

    pkey = GetPrivPKeyPtr(self);
    rb_scan_args(argc, argv, "21", &digest, &data, &options);
    if (!NIL_P(digest))
        md = ossl_evp_get_digestbyname(digest);
    StringValue(data);

    ctx = EVP_MD_CTX_new();
    if (!ctx)
        ossl_raise(ePKeyError, "EVP_MD_CTX_new");
    if (EVP_DigestSignInit(ctx, &pctx, md, /* engine */NULL, pkey) < 1) {
        EVP_MD_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_DigestSignInit");
    }
    if (!NIL_P(options)) {
        pkey_ctx_apply_options(pctx, options, &state);
        if (state) {
            EVP_MD_CTX_free(ctx);
            rb_jump_tag(state);
        }
    }
#if OSSL_OPENSSL_PREREQ(1, 1, 1) || OSSL_LIBRESSL_PREREQ(3, 4, 0)
    if (EVP_DigestSign(ctx, NULL, &siglen, (unsigned char *)RSTRING_PTR(data),
                       RSTRING_LEN(data)) < 1) {
        EVP_MD_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_DigestSign");
    }
    if (siglen > LONG_MAX) {
        EVP_MD_CTX_free(ctx);
        rb_raise(ePKeyError, "signature would be too large");
    }
    sig = ossl_str_new(NULL, (long)siglen, &state);
    if (state) {
        EVP_MD_CTX_free(ctx);
        rb_jump_tag(state);
    }
    if (EVP_DigestSign(ctx, (unsigned char *)RSTRING_PTR(sig), &siglen,
                       (unsigned char *)RSTRING_PTR(data),
                       RSTRING_LEN(data)) < 1) {
        EVP_MD_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_DigestSign");
    }
#else
    if (EVP_DigestSignUpdate(ctx, RSTRING_PTR(data), RSTRING_LEN(data)) < 1) {
        EVP_MD_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_DigestSignUpdate");
    }
    if (EVP_DigestSignFinal(ctx, NULL, &siglen) < 1) {
        EVP_MD_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_DigestSignFinal");
    }
    if (siglen > LONG_MAX) {
        EVP_MD_CTX_free(ctx);
        rb_raise(ePKeyError, "signature would be too large");
    }
    sig = ossl_str_new(NULL, (long)siglen, &state);
    if (state) {
        EVP_MD_CTX_free(ctx);
        rb_jump_tag(state);
    }
    if (EVP_DigestSignFinal(ctx, (unsigned char *)RSTRING_PTR(sig),
                            &siglen) < 1) {
        EVP_MD_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_DigestSignFinal");
    }
#endif
    EVP_MD_CTX_free(ctx);
    rb_str_set_len(sig, siglen);
    return sig;
}


  








  

    #sign_raw(digest, data [, options])  ⇒ String   



  

    

Signs data using a private key pkey. Unlike #sign, data will not be hashed by digest automatically.



See #verify_raw for the verification operation.



Added in version 3.0. See also the man page EVP_PKEY_sign(3).


digest



A String that represents the message digest algorithm name, or nil if the PKey type requires no digest algorithm. Although this method will not hash data with it, this parameter may still be required depending on the signature algorithm.


data



A String. The data to be signed.


options



A Hash that contains algorithm specific control operations to OpenSSL. See OpenSSL’s man page EVP_PKEY_CTX_ctrl_str(3) for details.





Example:



data = "Sign me!"
hash = OpenSSL::Digest.digest("SHA256", data)
pkey = OpenSSL::PKey.generate_key("RSA", rsa_keygen_bits: 2048)
signopts = { rsa_padding_mode: "pss" }
signature = pkey.sign_raw("SHA256", hash, signopts)

# Creates a copy of the RSA key pkey, but without the private components
pub_key = pkey.public_key
puts pub_key.verify_raw("SHA256", signature, hash, signopts) # => true


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 1118



static VALUE
ossl_pkey_sign_raw(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    VALUE digest, data, options, sig;
    const EVP_MD *md = NULL;
    EVP_PKEY_CTX *ctx;
    size_t outlen;
    int state;

    GetPKey(self, pkey);
    rb_scan_args(argc, argv, "21", &digest, &data, &options);
    if (!NIL_P(digest))
        md = ossl_evp_get_digestbyname(digest);
    StringValue(data);

    ctx = EVP_PKEY_CTX_new(pkey, /* engine */NULL);
    if (!ctx)
        ossl_raise(ePKeyError, "EVP_PKEY_CTX_new");
    if (EVP_PKEY_sign_init(ctx) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_sign_init");
    }
    if (md && EVP_PKEY_CTX_set_signature_md(ctx, md) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_CTX_set_signature_md");
    }
    if (!NIL_P(options)) {
        pkey_ctx_apply_options(ctx, options, &state);
        if (state) {
            EVP_PKEY_CTX_free(ctx);
            rb_jump_tag(state);
        }
    }
    if (EVP_PKEY_sign(ctx, NULL, &outlen, (unsigned char *)RSTRING_PTR(data),
                      RSTRING_LEN(data)) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_sign");
    }
    if (outlen > LONG_MAX) {
        EVP_PKEY_CTX_free(ctx);
        rb_raise(ePKeyError, "signature would be too large");
    }
    sig = ossl_str_new(NULL, (long)outlen, &state);
    if (state) {
        EVP_PKEY_CTX_free(ctx);
        rb_jump_tag(state);
    }
    if (EVP_PKEY_sign(ctx, (unsigned char *)RSTRING_PTR(sig), &outlen,
                      (unsigned char *)RSTRING_PTR(data),
                      RSTRING_LEN(data)) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_sign");
    }
    EVP_PKEY_CTX_free(ctx);
    rb_str_set_len(sig, outlen);
    return sig;
}


  








  

    #to_text  ⇒ String   



  

    

Dumps key parameters, public key, and private key components contained in the key into a human-readable text.



This is intended for debugging purpose.



See also the man page EVP_PKEY_print_private(3).


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 662



static VALUE
ossl_pkey_to_text(VALUE self)
{
    EVP_PKEY *pkey;
    BIO *bio;

    GetPKey(self, pkey);
    if (!(bio = BIO_new(BIO_s_mem())))
        ossl_raise(ePKeyError, "BIO_new");

    if (EVP_PKEY_print_private(bio, pkey, 0, NULL) == 1)
        goto out;
    OSSL_BIO_reset(bio);
    if (EVP_PKEY_print_public(bio, pkey, 0, NULL) == 1)
        goto out;
    OSSL_BIO_reset(bio);
    if (EVP_PKEY_print_params(bio, pkey, 0, NULL) == 1)
        goto out;

    BIO_free(bio);
    ossl_raise(ePKeyError, "EVP_PKEY_print_params");

  out:
    return ossl_membio2str(bio);
}


  








  

    #verify(digest, signature, data [, options])  ⇒ Boolean   



  

    

Verifies the signature for the data using a message digest algorithm digest and a public key pkey.



Returns true if the signature is successfully verified, false otherwise. The caller must check the return value.



See #sign for the signing operation and an example.



See also the man page EVP_DigestVerify(3).


digest



See #sign.


signature



A String containing the signature to be verified.


data



See #sign.


options



See #sign. options parameter was added in version 3.0.




  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 1027



static VALUE
ossl_pkey_verify(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    VALUE digest, sig, data, options;
    const EVP_MD *md = NULL;
    EVP_MD_CTX *ctx;
    EVP_PKEY_CTX *pctx;
    int state, ret;

    GetPKey(self, pkey);
    rb_scan_args(argc, argv, "31", &digest, &sig, &data, &options);
    ossl_pkey_check_public_key(pkey);
    if (!NIL_P(digest))
        md = ossl_evp_get_digestbyname(digest);
    StringValue(sig);
    StringValue(data);

    ctx = EVP_MD_CTX_new();
    if (!ctx)
        ossl_raise(ePKeyError, "EVP_MD_CTX_new");
    if (EVP_DigestVerifyInit(ctx, &pctx, md, /* engine */NULL, pkey) < 1) {
        EVP_MD_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_DigestVerifyInit");
    }
    if (!NIL_P(options)) {
        pkey_ctx_apply_options(pctx, options, &state);
        if (state) {
            EVP_MD_CTX_free(ctx);
            rb_jump_tag(state);
        }
    }
#if OSSL_OPENSSL_PREREQ(1, 1, 1) || OSSL_LIBRESSL_PREREQ(3, 4, 0)
    ret = EVP_DigestVerify(ctx, (unsigned char *)RSTRING_PTR(sig),
                           RSTRING_LEN(sig), (unsigned char *)RSTRING_PTR(data),
                           RSTRING_LEN(data));
    EVP_MD_CTX_free(ctx);
    if (ret < 0)
        ossl_raise(ePKeyError, "EVP_DigestVerify");
#else
    if (EVP_DigestVerifyUpdate(ctx, RSTRING_PTR(data), RSTRING_LEN(data)) < 1) {
        EVP_MD_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_DigestVerifyUpdate");
    }
    ret = EVP_DigestVerifyFinal(ctx, (unsigned char *)RSTRING_PTR(sig),
                                RSTRING_LEN(sig));
    EVP_MD_CTX_free(ctx);
    if (ret < 0)
        ossl_raise(ePKeyError, "EVP_DigestVerifyFinal");
#endif
    if (ret)
        return Qtrue;
    else {
        ossl_clear_error();
        return Qfalse;
    }
}


  








  

    #verify_raw(digest, signature, data [, options])  ⇒ Boolean   



  

    

Verifies the signature for the data using a public key pkey. Unlike #verify, this method will not hash data with digest automatically.



Returns true if the signature is successfully verified, false otherwise. The caller must check the return value.



See #sign_raw for the signing operation and an example code.



Added in version 3.0. See also the man page EVP_PKEY_verify(3).


signature



A String containing the signature to be verified.




  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 1194



static VALUE
ossl_pkey_verify_raw(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    VALUE digest, sig, data, options;
    const EVP_MD *md = NULL;
    EVP_PKEY_CTX *ctx;
    int state, ret;

    GetPKey(self, pkey);
    rb_scan_args(argc, argv, "31", &digest, &sig, &data, &options);
    ossl_pkey_check_public_key(pkey);
    if (!NIL_P(digest))
        md = ossl_evp_get_digestbyname(digest);
    StringValue(sig);
    StringValue(data);

    ctx = EVP_PKEY_CTX_new(pkey, /* engine */NULL);
    if (!ctx)
        ossl_raise(ePKeyError, "EVP_PKEY_CTX_new");
    if (EVP_PKEY_verify_init(ctx) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_verify_init");
    }
    if (md && EVP_PKEY_CTX_set_signature_md(ctx, md) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_CTX_set_signature_md");
    }
    if (!NIL_P(options)) {
        pkey_ctx_apply_options(ctx, options, &state);
        if (state) {
            EVP_PKEY_CTX_free(ctx);
            rb_jump_tag(state);
        }
    }
    ret = EVP_PKEY_verify(ctx, (unsigned char *)RSTRING_PTR(sig),
                          RSTRING_LEN(sig),
                          (unsigned char *)RSTRING_PTR(data),
                          RSTRING_LEN(data));
    EVP_PKEY_CTX_free(ctx);
    if (ret < 0)
        ossl_raise(ePKeyError, "EVP_PKEY_verify");

    if (ret)
        return Qtrue;
    else {
        ossl_clear_error();
        return Qfalse;
    }
}


  








  

    #verify_recover(digest, signature [, options])  ⇒ String   



  

    

Recovers the signed data from signature using a public key pkey. Not all signature algorithms support this operation.



Added in version 3.0. See also the man page EVP_PKEY_verify_recover(3).


signature



A String containing the signature to be verified.




  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_pkey.c', line 1257



static VALUE
ossl_pkey_verify_recover(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    VALUE digest, sig, options, out;
    const EVP_MD *md = NULL;
    EVP_PKEY_CTX *ctx;
    int state;
    size_t outlen;

    GetPKey(self, pkey);
    rb_scan_args(argc, argv, "21", &digest, &sig, &options);
    ossl_pkey_check_public_key(pkey);
    if (!NIL_P(digest))
        md = ossl_evp_get_digestbyname(digest);
    StringValue(sig);

    ctx = EVP_PKEY_CTX_new(pkey, /* engine */NULL);
    if (!ctx)
        ossl_raise(ePKeyError, "EVP_PKEY_CTX_new");
    if (EVP_PKEY_verify_recover_init(ctx) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_verify_recover_init");
    }
    if (md && EVP_PKEY_CTX_set_signature_md(ctx, md) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_CTX_set_signature_md");
    }
    if (!NIL_P(options)) {
        pkey_ctx_apply_options(ctx, options, &state);
        if (state) {
            EVP_PKEY_CTX_free(ctx);
            rb_jump_tag(state);
        }
    }
    if (EVP_PKEY_verify_recover(ctx, NULL, &outlen,
                                (unsigned char *)RSTRING_PTR(sig),
                                RSTRING_LEN(sig)) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_verify_recover");
    }
    out = ossl_str_new(NULL, (long)outlen, &state);
    if (state) {
        EVP_PKEY_CTX_free(ctx);
        rb_jump_tag(state);
    }
    if (EVP_PKEY_verify_recover(ctx, (unsigned char *)RSTRING_PTR(out), &outlen,
                                (unsigned char *)RSTRING_PTR(sig),
                                RSTRING_LEN(sig)) <= 0) {
        EVP_PKEY_CTX_free(ctx);
        ossl_raise(ePKeyError, "EVP_PKEY_verify_recover");
    }
    EVP_PKEY_CTX_free(ctx);
    rb_str_set_len(out, outlen);
    return out;
}