DSA vs RSA：你怎麼知道

Question

有沒有人有一個工具來區分RSA公鑰和DSA公鑰？我有兩個SSH的.pub文件，我需要知道，如果他們是RSA或DSA。

Answer 1

正如其他答案指出，由於該文件是在SSH.COM格式，可以轉換爲OpenSSH格式，只是打開文件來檢查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. 

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

Answer 2

您可以使用ssh-凱基獲得指紋和.pub文件類型了：

ssh-keygen -lf id_rsa.pub