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require_relative '../../../spec_helper'
require 'openssl'
describe "OpenSSL::KDF.pbkdf2_hmac" do
before :each do
@defaults = {
salt: "\x00".b * 16,
iterations: 20_000,
length: 16,
hash: "sha1"
}
end
it "creates the same value with the same input" do
key = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults)
key.should == "!\x99+\xF0^\xD0\x8BM\x158\xC4\xAC\x9C\xF1\xF0\xE0".b
end
it "supports nullbytes embedded in the password" do
key = OpenSSL::KDF.pbkdf2_hmac("sec\x00ret".b, **@defaults)
key.should == "\xB9\x7F\xB0\xC2\th\xC8<\x86\xF3\x94Ij7\xEF\xF1".b
end
it "coerces the password into a String using #to_str" do
pass = mock("pass")
pass.should_receive(:to_str).and_return("secret")
key = OpenSSL::KDF.pbkdf2_hmac(pass, **@defaults)
key.should == "!\x99+\xF0^\xD0\x8BM\x158\xC4\xAC\x9C\xF1\xF0\xE0".b
end
it "coerces the salt into a String using #to_str" do
salt = mock("salt")
salt.should_receive(:to_str).and_return("\x00".b * 16)
key = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, salt: salt)
key.should == "!\x99+\xF0^\xD0\x8BM\x158\xC4\xAC\x9C\xF1\xF0\xE0".b
end
it "coerces the iterations into an Integer using #to_int" do
iterations = mock("iterations")
iterations.should_receive(:to_int).and_return(20_000)
key = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, iterations: iterations)
key.should == "!\x99+\xF0^\xD0\x8BM\x158\xC4\xAC\x9C\xF1\xF0\xE0".b
end
it "coerces the length into an Integer using #to_int" do
length = mock("length")
length.should_receive(:to_int).and_return(16)
key = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, length: length)
key.should == "!\x99+\xF0^\xD0\x8BM\x158\xC4\xAC\x9C\xF1\xF0\xE0".b
end
it "accepts a OpenSSL::Digest object as hash" do
hash = OpenSSL::Digest.new("sha1")
key = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, hash: hash)
key.should == "!\x99+\xF0^\xD0\x8BM\x158\xC4\xAC\x9C\xF1\xF0\xE0".b
end
it "accepts an empty password" do
key = OpenSSL::KDF.pbkdf2_hmac("", **@defaults)
key.should == "k\x9F-\xB1\xF7\x9A\v\xA1(C\xF9\x85!P\xEF\x8C".b
end
it "accepts an empty salt" do
key = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, salt: "")
key.should == "\xD5f\xE5\xEA\xF91\x1D\xD3evD\xED\xDB\xE80\x80".b
end
it "accepts an empty length" do
key = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, length: 0)
key.should.empty?
end
it "accepts an arbitrary length" do
key = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, length: 19)
key.should == "!\x99+\xF0^\xD0\x8BM\x158\xC4\xAC\x9C\xF1\xF0\xE0\xCF\xBB\x7F".b
end
it "accepts any hash function known to OpenSSL" do
key = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, hash: "sha512")
key.should == "N\x12}D\xCE\x99\xDBC\x8E\xEC\xAAr\xEA1\xDF\xFF".b
end
it "raises a TypeError when password is not a String and does not respond to #to_str" do
-> {
OpenSSL::KDF.pbkdf2_hmac(Object.new, **@defaults)
}.should raise_error(TypeError, "no implicit conversion of Object into String")
end
it "raises a TypeError when salt is not a String and does not respond to #to_str" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, salt: Object.new)
}.should raise_error(TypeError, "no implicit conversion of Object into String")
end
it "raises a TypeError when iterations is not an Integer and does not respond to #to_int" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, iterations: Object.new)
}.should raise_error(TypeError, "no implicit conversion of Object into Integer")
end
it "raises a TypeError when length is not an Integer and does not respond to #to_int" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, length: Object.new)
}.should raise_error(TypeError, "no implicit conversion of Object into Integer")
end
it "raises a TypeError when hash is neither a String nor an OpenSSL::Digest" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, hash: Object.new)
}.should raise_error(TypeError, "wrong argument type Object (expected OpenSSL/Digest)")
end
it "raises a TypeError when hash is neither a String nor an OpenSSL::Digest, it does not try to call #to_str" do
hash = mock("hash")
hash.should_not_receive(:to_str)
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, hash: hash)
}.should raise_error(TypeError, "wrong argument type MockObject (expected OpenSSL/Digest)")
end
it "raises a RuntimeError for unknown digest algorithms" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, hash: "wd40")
}.should raise_error(RuntimeError, /Unsupported digest algorithm \(wd40\)/)
end
it "treats salt as a required keyword" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults.except(:salt))
}.should raise_error(ArgumentError, 'missing keyword: :salt')
end
it "treats iterations as a required keyword" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults.except(:iterations))
}.should raise_error(ArgumentError, 'missing keyword: :iterations')
end
it "treats length as a required keyword" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults.except(:length))
}.should raise_error(ArgumentError, 'missing keyword: :length')
end
it "treats hash as a required keyword" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults.except(:hash))
}.should raise_error(ArgumentError, 'missing keyword: :hash')
end
it "treats all keywords as required" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret")
}.should raise_error(ArgumentError, 'missing keywords: :salt, :iterations, :length, :hash')
end
guard -> { OpenSSL::OPENSSL_VERSION_NUMBER >= 0x30000000 } do
it "raises an OpenSSL::KDF::KDFError for 0 or less iterations" do
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, iterations: 0)
}.should raise_error(OpenSSL::KDF::KDFError, "PKCS5_PBKDF2_HMAC: invalid iteration count")
-> {
OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, iterations: -1)
}.should raise_error(OpenSSL::KDF::KDFError, /PKCS5_PBKDF2_HMAC/)
end
end
end
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