PolarSSL is a light-weight open source cryptographic and SSL/TLS library written in C. PolarSSL is written with embedded systems in mind and has been ported on a number of architectures, including ARM, PowerPC, MIPS and Motorola 68000.

Features include:

• Small memory footprint
• Clean and simple API for integration
• Loose coupling of cryptographic code.
• Symmetric encryption algorithms: AES, Triple-DES, DES, ARC4, Camellia, XTEA
• Hash algorithms: MD2, MD4, MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512
• HAVEGE random number generator
• RSA with PKCS#1 v1.5 padding
• SSL version 3 and TLS version 1 client support
• X.509 certificate and CRL reading from memory or disk in PEM and DER formats
• Over 900 regression and code coverage tests
• Example applications

All symmetric and hashing algorithms are not coupled to any other file and can thus be easily integrated into existing projects. Configuration can be done by modifying a single config.h file.