是一本系统讲解加密和解密邮箱和密码的书籍，通过不同的案例实例分析引导。-Is a system mailbox on the encryption and decryption and password books, through various examples of analysis of the case guide.

ISO 27145-1-2006.General information and use case definition.pdf

Returns check node table for LDPC coding in DVB.S2 standard. R code rate. switch R case 1/4- Returns check node table for LDPC coding in DVB.S2 standard. R code rate. switch R case 1/4