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Verifies data using the Probabilistic Signature Scheme (RSA-PSS).

The return value is true if the signature is valid, false otherwise. RSAError will be raised if an error occurs.

See sign_pss for the signing operation and an example code.

Parameters

digest

A String containing the message digest algorithm name.

data

A String. The data to be signed.

salt_length

The length in octets of the salt. Two special values are reserved: :digest means the digest length, and :auto means automatically determining the length based on the signature.

mgf1_hash

The hash algorithm used in MGF1.

Sets the lower bound on the supported SSL/TLS protocol version. The version may be specified by an integer constant named OpenSSL::SSL::*_VERSION, a Symbol, or nil which means “any version”.

Be careful that you don’t overwrite OpenSSL::SSL::OP_NO_{SSL,TLS}v* options by options= once you have called min_version= or max_version=.

Example

ctx = OpenSSL::SSL::SSLContext.new
ctx.min_version = OpenSSL::SSL::TLS1_1_VERSION
ctx.max_version = OpenSSL::SSL::TLS1_2_VERSION

sock = OpenSSL::SSL::SSLSocket.new(tcp_sock, ctx)
sock.connect # Initiates a connection using either TLS 1.1 or TLS 1.2

Returns the security level for the context.

See also OpenSSL::SSL::SSLContext#security_level=.

Sets the security level for the context. OpenSSL limits parameters according to the level. The “parameters” include: ciphersuites, curves, key sizes, certificate signature algorithms, protocol version and so on. For example, level 1 rejects parameters offering below 80 bits of security, such as ciphersuites using MD5 for the MAC or RSA keys shorter than 1024 bits.

Note that attempts to set such parameters with insufficient security are also blocked. You need to lower the level first.

This feature is not supported in OpenSSL < 1.1.0, and setting the level to other than 0 will raise NotImplementedError. Level 0 means everything is permitted, the same behavior as previous versions of OpenSSL.

See the manpage of SSL_CTX_set_security_level(3) for details.

Writes string to the SSL connection in a non-blocking manner. Raises an SSLError if writing would block.

Returns the result of the peer certificates verification. See verify(1) for error values and descriptions.

If no peer certificate was presented X509_V_OK is returned.

Returns the last Finished message sent

Adds a new entry with the given oid and value to this name. The oid is an object identifier defined in ASN.1. Some common OIDs are:

C

Country Name

CN

Common Name

DC

Domain Component

O

Organization Name

OU

Organizational Unit Name

ST

State or Province Name

The optional keyword parameters loc and set specify where to insert the new attribute. Refer to the manpage of X509_NAME_add_entry(3) for details. loc defaults to -1 and set defaults to 0. This appends a single-valued RDN to the end.

The long name of the ObjectId, as defined in <openssl/objects.h>.