I tried and learn the cryptography tools present in Bigloo. I followed the steps from the manual carefully. As Maxwell Smart would put it, I used the old trick of copying and pasting the instructions from the manual. Here is what I did:
emacs & >From emacs: M-x shell ~/wrk/crypto$ openssl genrsa -out my_rsa_key.pem 1024 Generating RSA private key, 1024 bit long modulus ..++++++ ...........................................................++++++ e is 65537 (0x10001) ~/wrk/crypto$ bigloo ------------------------------------------------------------------------------ Bigloo (4.1a) ,--^, `a practical Scheme compiler' _ ___/ /|/ Thu Feb 20 08:08:12 CET 2014 ,;'( )__, ) ' Inria -- Sophia Antipolis ;; // L__. email: [email protected] ' \ / ' url: http://www-sop.inria.fr/indes/fp/Bigloo ^ ^ ------------------------------------------------------------------------------ 1:=> (module rsa-example (library crypto)) #unspecified 1:=> (define *key* (read-pem-key "my_rsa_key.pem")) (define *public-key* (extract-public-rsa-key *key*)) *key* 1:=> *public-key* 1:=> ;; publish the *public-key*: (write-pem-key-string *public-key*) -----BEGIN PUBLIC KEY----- MIGeMA0GCSqGSIb3DQEBAQUAA4GMADCBiAKBgK/BcqMKzd3vaYAF0dfHFPB4VdisbsNPzBtPSMhQ sAWbgeyVcnvSGx3/TYEGQOVTFrl1qZQ+PRh+rtYOQqtxM5q1p/F8JUzZ5sUWUGx2eznZUAtE3jnt 11VMLtpTGPYvpy2tkg65gpXNwuv/XA/6w6dlJkHCV2AXXlWEY8NaqobdAgMBAAE= -----END PUBLIC KEY----- 1:=> (define msg-hash (sha1sum "my message")) (define msg-hash-bignum (octet-string->bignum msg-hash)) msg-hash 1:=> msg-hash-bignum 1:=> (define msg-hash-bignum (octet-string->bignum (string-hex-intern msg-hash))) msg-hash-bignum 1:=> (define signature (rsa-sign *key* msg-hash-bignum)) signature 1:=> (rsa-verify *public-key* msg-hash-bignum signature) #t 1:=> (define encrypted (encrypt 'aes "Cryptography" "my random password")) encrypted 1:=> (define encrypted-key (rsa-encrypt *public-key* (octet-string->bignum "my random password"))) encrypted-key 1:=> (define aes-key (bignum->octet-string (rsa-decrypt *key* encrypted-key))) aes-key 1:=> (decrypt 'aes aes-key encrypted) ^\\274 1:=> As you can see from the listing, I did not get the string "Cryptography" back. Instead of it, I got ^\\274. The fun would be even greater if I had gotten ^\\42.
