Etiqueta: Cryptography

Cryptography (or cryptology; from Greek κρυπτός kryptós, “hidden, secret”; and γράφειν graphein, “writing”, or -λογία -logia, “study”, respectively) is the practice and study of techniques for secure communication in the presence of third parties (called adversaries). More generally, it is about constructing and analyzing protocols that block adversaries; various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, and electrical engineering. Applications of cryptography include ATM cards, computer passwords, and electronic commerce.

Crypt version 1.0.1

Version 1.0.1 – Addition of a Twitter link. – Correction of code. Versions of the Crypt software for Mac.

Versiones de Crypt

Versiones de Crypt. Version 1.0.0 Version 1.0.1 Version 1.0.2 Version 1.0.3 Version 1.0.4

Crypt version 1.0.0

Version 1.0.0 – Initial release. Versions of the Crypt software for Mac. website   Key features of : is the official page of the software Cryptix created by Rbcafe. is twitter ready is also available on is secure. (HTTPS)  


Securityd securityd — Security context daemon for Authorization and cryptographic operations SYNOPSIS securityd DESCRIPTION securityd maintains security contexts and arbitrates cryptographic opera- tions and Security Authorizations. Access to keychain items is routed through securityd to enforce access controls and to keep private keys out of user process address space. Authorization calls also communicate with securityd […]


RC4 RC4_set_key, RC4 – RC4 encryption SYNOPSIS #include (openssl/rc4.h) void RC4_set_key(RC4_KEY *key, int len, const unsigned char *data); void RC4(RC4_KEY *key, unsigned long len, const unsigned char *indata, unsigned char *outdata); DESCRIPTION This library implements the Alleged RC4 cipher, which is described for example in Applied Cryptography. It is believed to be compatible with RC4[TM], […]


Cryptography And most of all the Vigenère cipher. Information from wikipedia about the Vigenère cipher The Vigenère cipher is named for Blaise de Vigenère. Although Giovan Battista Bellaso had invented the cipher earlier, Vigenère developed a stronger autokey cipher. A reproduction of the Confederacy’s cipher disk used in the U.S. Civil War on display in […]