sdc源码，在ubuntu12.4中编译成功，用于对linux中可执二进制行文件的加密。执行make会弹出编译选项，编译成功后会生成sdc,例如：可执行二进制文件为hello,执行./sdc hello 后输入密码，会生成加密文件hello.sdc ,执行./hello.sdc,输入解密密码会生成hello。 -SDC, or Self Decrypting Binary Generator, creates self decrypting binaries for common operating systems and architectures. The target file is encrypted using Blowfish in Cipher text Feedback Mode (CFB) and appended to an executable which reads itself and attempts to decrypt the appended data when it is run. Targets: Linux x86 (ELF), Windows x86 (PE-COFF), OpenBSD x86 (ELF), OpenBSD arm (ELF), OpenBSD sparc64 (ELF), FreeBSD x86 (ELF), NetBSD x86 (ELF), Solaris sparc (ELF).