Created
June 9, 2012 21:44
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Save RSA public keys in the pre-1.9.3 PKCS#1 format
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| require 'openssl' | |
| require 'base64' | |
| rsa = OpenSSL::PKey::RSA.new(2048) | |
| modulus = rsa.n | |
| exponent = rsa.e | |
| ary = [OpenSSL::ASN1::Integer.new(modulus), OpenSSL::ASN1::Integer.new(exponent)] | |
| pub_key = OpenSSL::ASN1::Sequence.new(ary) | |
| base64 = Base64.encode64(pub_key.to_der) | |
| #This is the equivalent to the PKCS#1 encoding used before 1.9.3 | |
| pem = "-----BEGIN RSA PUBLIC KEY-----\n#{base64}-----END RSA PUBLIC KEY-----" |
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Hello, this is useful but i am facing this issue:
`[20] pry(#)> ary = [OpenSSL::ASN1::Integer.new(rsa_public['n']), OpenSSL::ASN1::Integer]
14:00:41 rails.1 | => [#<OpenSSL::ASN1::Integer:0x00007fd881238988
14:00:41 rails.1 | @indefinite_length=false,
14:00:41 rails.1 | @tag=2,
14:00:41 rails.1 | @tag_class=:UNIVERSAL,
14:00:41 rails.1 | @tagging=nil,
14:00:41 rails.1 | @value=
14:00:41 rails.1 | "oc7PjsJehmf7z_FCQWKbm1v8QddVDC5dZu9mM_DtmhHmuGeD5DGTUf2tAZSDG_hj6tX8FPAKP7n0dGCsDtVrKj-_x3ck9pMreAcoSaCP0YHZOArecyymSZIL6-RY4Fm-r_fF_c9JDEkftp7l_El_aui0hD400V9VkFiSCDnJYES7wSfsWmcUv7hx_wb1jrseGoIMFtA5CiRhSwaCeHHrFRVd6zkuCZ6ACp9OL0dCVOVRosKioRFH9hkyzixAdIEqRYU2YxaIPgPV2hNoLAKoXiVtYV2yB0RR6hwHeGLPijGX5B9xe4Tee5qpeXlaELG6kKaUKn5ZrH185GEMQlKQ8Q">,
14:00:41 rails.1 | #<OpenSSL::ASN1::Integer:0x00007fd881238960
14:00:41 rails.1 | @indefinite_length=false,
14:00:41 rails.1 | @tag=2,
14:00:41 rails.1 | @tag_class=:UNIVERSAL,
14:00:41 rails.1 | @tagging=nil,
14:00:41 rails.1 | @value="AQAB">]
14:01:11 rails.1 | [21] pry(#)> pub_key = OpenSSL::ASN1::Sequence.new(ary)
14:01:11 rails.1 | => #<OpenSSL::ASN1::Sequence:0x00007fd88b990988
14:01:11 rails.1 | @indefinite_length=false,
14:01:11 rails.1 | @tag=16,
14:01:11 rails.1 | @tag_class=:UNIVERSAL,
14:01:11 rails.1 | @tagging=nil,
14:01:11 rails.1 | @value=
14:01:11 rails.1 | [#<OpenSSL::ASN1::Integer:0x00007fd881238988
14:01:11 rails.1 | @indefinite_length=false,
14:01:11 rails.1 | @tag=2,
14:01:11 rails.1 | @tag_class=:UNIVERSAL,
14:01:11 rails.1 | @tagging=nil,
14:01:11 rails.1 | @value=
14:01:11 rails.1 | "oc7PjsJehmf7z_FCQWKbm1v8QddVDC5dZu9mM_DtmhHmuGeD5DGTUf2tAZSDG_hj6tX8FPAKP7n0dGCsDtVrKj-_x3ck9pMreAcoSaCP0YHZOArecyymSZIL6-RY4Fm-r_fF_c9JDEkftp7l_El_aui0hD400V9VkFiSCDnJYES7wSfsWmcUv7hx_wb1jrseGoIMFtA5CiRhSwaCeHHrFRVd6zkuCZ6ACp9OL0dCVOVRosKioRFH9hkyzixAdIEqRYU2YxaIPgPV2hNoLAKoXiVtYV2yB0RR6hwHeGLPijGX5B9xe4Tee5qpeXlaELG6kKaUKn5ZrH185GEMQlKQ8Q">,
14:01:11 rails.1 | #<OpenSSL::ASN1::Integer:0x00007fd881238960
14:01:11 rails.1 | @indefinite_length=false,
14:01:11 rails.1 | @tag=2,
14:01:11 rails.1 | @tag_class=:UNIVERSAL,
14:01:11 rails.1 | @tagging=nil,
14:01:11 rails.1 | @value="AQAB">]>
14:01:23 rails.1 | [22] pry(#)> base64 = Base64.encode64(pub_key.to_der)
14:01:23 rails.1 | TypeError: Cannot convert into OpenSSL::BN
14:01:23 rails.1 | from (pry):13:in `to_der'
Any idea how i can resolve this?
`