Hi Aaron,
RSA keys are computed by non trivial soft.
the better the generation is, the robust the keys are .. of cause.
you can find some free algorithm on the net, you also can use the
PGPfreeware soft (use to sign & encrypt emails) that include an RSA keys
generator and let you export them as hexadecimal plain text.
a CRT (Chinese Remainder Theorem) is defined by five component:
* P & Q two prime number (prime between each other)
* 1/Q mod P
* d mod (P - 1)
* d mod (Q - 1)
where d is 1/E mod (P-1)(Q-1) and E the public exponent
the goal of such a definition is to speed up the RSA exponentiation,
instead of perform that computation with an exponent whose size is equal to
the key size, several simpler computation are performed with the different
components.
the matching with public key is grant by the following definition:
public modulus ( = private modulus ) = P * Q
public exponent = E (used in CRT component computation).
(thank to fix any error.)
Sylvain.
A 17:23 26/08/99 -0400, Aaron Stromas a �crit :
>hi,
>
>i'm using the iButton from Dulles semiconductor which supports Javacard
>2.0. i'd like to use the public/private key encryption and am looking
>for a few answers. from my understanding of RSA_PublicKey/RSA_PrivateKey
>one needs to supply modulus and public/private exponents, respectively,
>to those objects. my question is, in practice, how does one compute
>these parameters? are there some publicly available utilities or am i
>facing some cryptographic programming?
>
>also, i don't understand the RSA_CRT_PrivateKey and how the matching
>RSA_PublicKey is computed.
>
>thanks in advance for any help,
>
>--
>Aaron Stromas | "Tick-tick-tick!!!... ja, Pantani is weg...."
>Oracle Corp. | BRTN commentator,
>+1 703 708 6821 | L'Alpe d'Huez, 1995 Tour de France
>
>
>Attachment Converted: "c:\net\Attach\astromas.vcf"
>
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