I would just like to publish this information somewhere, so that Google can help people find it easier than I did. If you have ever wondered how the internal OpenSSL RSA parameters map to the Java parameters on RSAPrivateCrtKey, this little table will probably help you a bit. There are three different names in motion here. The first one is the internal field names in OpenSSL. These are also used as method names in Ruby. The second name is what gets presented when you use something like to_text on an RSA key. The third name is what it’s called in Java.
- n == modulus == modulus
- e == public exponent == publicExponent
- d == private exponent == privateExponent
- p == prime1 == primeP
- q == prime2 == primeQ
- dmp1 == exponent1 == primeExponentP
- dmq1 == exponent2 == primeExponentQ
- iqmp == coefficient == crtCoefficient
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