OpenSSL的DGST認證失敗

Question

我試圖複製在OpenSSL的在這個博客上提出的工作流程： http://farid.hajji.name/blog/2009/07/27/public-key-cryptography-with-openssl/

然而，認證似乎儘管許多變化失敗。出了什麼問題？請參閱下面的代碼，您可以複製並粘貼到OpenSSL中。請注意，我正在使用編譯的Windows二進制版本的OpenSSL。

//================Phase 1 - Setup================ 

//Generate my private key (myprivatekey.txt) 
genpkey -algorithm RSA -out C:\myprivatekey.txt -pass pass:abc123 -pkeyopt rsa_keygen_bits:2048 

//Generate friend's private key (friendprivatekey.txt) 
genpkey -algorithm RSA -out C:\friendprivatekey.txt -pass pass:123abc -pkeyopt rsa_keygen_bits:2048 

---------------- 

//Extract my public key (mypublickey.txt) from my private key (myprivatekey.txt) 
rsa -passin pass:abc123 -in C:\myprivatekey.txt -pubout -out C:\mypublickey.txt 

//Extract friend's public key (friendpublickey.txt) from my private key (friendprivatekey.txt) 
rsa -passin pass:123abc -in C:\friendprivatekey.txt -pubout -out C:\friendpublickey.txt 

---------------- 

//Generate my password (a random base64 string password saved mypassword.txt) 
rand -base64 -out C:\mypassword.txt 128 

//Generate friend's password (a random base64 string password saved to friendpassword.txt) 
rand -base64 -out C:\friendpassword.txt 128 

//Delete the .rnd file that's generated? Not sure what it is. 

---------------- 

//Encrypt my password using my private key (encrypted password saved to a binary file - myencryptedpassword.txt) 
pkeyutl -in C:\mypassword.txt -out C:\myencryptedpassword.txt -inkey C:\myprivatekey.txt -passin pass:abc123 

//Encrypt friend's password using friend's private key (encrypted password saved to a binary file - friendencryptedpassword.txt) 
pkeyutl -in C:\friendpassword.txt -out C:\friendencryptedpassword.txt -inkey C:\friendprivatekey.txt -passin pass:123abc 

---------------- 

//Convert my encrypted password to base64 from binary (saved as myencryptedpasswordbase64.txt) 
base64 -in C:\myencryptedpassword.txt -out C:\myencryptedpasswordbase64.txt 

//Convert friend's encrypted password to base64 from binary (saved as friendencryptedpasswordbase64.txt) 
base64 -in C:\friendencryptedpassword.txt -out C:\friendencryptedpasswordbase64.txt 

---------------- 

//Create a signed hash of my password so my friend knows it's coming from me (signed hash saved as mysignedhash.txt and is in binary form) 
dgst -sha256 -sign C:\myprivatekey.txt -passin pass:abc123 -out C:\mysignedhash.txt C:\myencryptedpasswordbase64.txt 

//Create a signed hash of friend's password so I know it's coming from my friend (signed hash saved as friendsignedhash.txt and is in binary form) 
dgst -sha256 -sign C:\friendprivatekey.txt -passin pass:123abc -out C:\friendsignedhash.txt C:\friendencryptedpasswordbase64.txt 

---------------- 

//Convert my signed hash from binary to base64 
base64 -in C:\mysignedhash.txt -out C:\mysignedhashbase64.txt 

//Convert friend's signed hash from binary to base64 
base64 -in C:\friendsignedhash.txt -out C:\friendsignedhashbase64.txt 

//================Phase 2 - Authentication================ 

//Now, we reverse the process and authenticate the friend. Let's prefix all output files with "phase2" 

//I provide friend with my public key and my encrypted password 
//Friend provides me with their public key 

//Convert friend's encrypted password from base64 to binary. The output file will be the same as friendsignedhash.txt 
base64 -d -in C:\friendsignedhashbase64.txt -out C:\phase2friendsignedhash.txt 

//Convert friend's signed hash from base64 to binary. The output file will be the same as C:\friendsignedhash.txt 
base64 -d -in C:\friendencryptedpasswordbase64.txt -out C:\phase2friendencryptedpassword.txt 

//Verify if the password originates from my friend (by checking against my friend's public key) 
dgst -sha256 -verify C:\friendpublickey.txt -signature C:\phase2friendsignedhash.txt -out C:\friendresult.txt C:\phase2friendencryptedpassword.txt 

任何想法爲什麼驗證失敗發生？

Answer 1

問題是您簽署了friendencryptedpasswordbase64.txt，但正在嘗試使用​​（非base64）進行驗證。如果你與前者覈實，它完美的作品！

除此之外，我確實看到一些與安全有關的問題。他們沒有引起你問到的問題，但他們違背良好的安全實踐。

首先，您可能想用您的朋友的公鑰而不是您的私鑰加密您的密碼。那麼只有你朋友的私鑰才能解密它。否則，使用公鑰的任何人都可以解密您的加密密碼。其次，通常，您不希望將多個用途（即簽名和加密）用於同一個密鑰。 Use a separate key for each function。