DSA vs RSA：你怎么知道

Question

有没有人有一个工具来区分RSA公钥和DSA公钥？我有两个SSH的.pub文件，我需要知道，如果他们是RSA或DSA。

Answer 1

正如其他答案指出，由于该文件是在SSH.COM格式，可以转换为OpenSSH格式，只是打开文件来检查ssh-dsa或ssh-rsa：

To convert your SSH.COM key to OpenSSH format use: 

ssh-keygen -i -f ssh_key.pub 

From the ssh-keygen manpage 

-i This option will read an unencrypted private (or public) key 
     file in SSH2-compatible format and print an OpenSSH 
     compatible private (or public) key to stdout. ssh-keygen 
     also reads the `SECSH Public Key File Format'. This option 
     allows importing keys from several commercial SSH 
     implementations. 
-f Specifies the filename of the key file. 

来源：http://landru.uwaterloo.ca/cgi-bin/wiki.pl?OpenSSH_-_SSH.Com_Interoperability

Answer 2

您可以使用ssh-凯基获得指纹和.pub文件类型了：

ssh-keygen -lf id_rsa.pub