[root@netkiller nginx]# openssl version
OpenSSL 1.0.1e-fips 11 Feb 2013
			

$ openssl speed
			

$ openssl speed rsa
$ openssl speed aes
			

openssl req -new -x509 -days 7300 -key ca.key -out ca.crt
			

openssl x509 -req -in client-req.csr -out client.crt -signkey client-key.pem -CA ca.crt -CAkey ca.key -days 365 -CAserial serial
			

驗證一下我們生成的檔案。

openssl x509 -in cacert.pem -text -noout
			

-extfile

openssl x509 -req -in careq.pem -extfile openssl.cnf -extensions v3_ca -signkey key.pem -out cacert.pem
			

# 生成CRL列表
$ openssl ca -gencrl -out exampleca.crl
			

# 查看CRL列表信息
$ openssl crl -in exampleca.crl -text -noout

# 驗證CRL列表簽名信息
$ openssl crl -in exampleca.crl -noout -CAfile cacert.pem
			

-clcerts 表示僅導出客戶證書。

openssl pkcs12 -export -clcerts -in 324.cer -inkey ca.pem -out 324.p12 -name "Email SMIME"
			

轉換PEM證書檔案和私鑰到PKCS#12檔案

openssl pkcs12 -export -out certificate.pfx -inkey privateKey.key -in certificate.crt -certfile CACert.crt
			

MD5-based password algorithm

# openssl passwd -1 -salt 'random-phrase-here' 'your-password-here'
$1$random-p$AOw9RDIWQm6tfUo9Ediu/0
			

-crypt standard Unix password algorithm (default)

# openssl passwd -crypt -salt 'sa' 'password'
sa3tHJ3/KuYvI
			

如何創建一個檔案的 MD5 或 SHA1 摘要?

摘要創建使用 dgst 選項.

$ openssl list-message-digest-commands
md2
md4
md5
mdc2
rmd160
sha
sha1
				

208.1.9.2. md5

# MD5 digest
openssl dgst -md5 filename
				

	注意
	MD5 信息摘要也同樣可以使用md5sum創建

				
$ echo "Hello World!" > message.txt
$ openssl dgst -md5 message.txt
MD5(message.txt)= d9226d4bd8779baa69db272f89a2e05c
				
				

# SHA1 digest
openssl dgst -sha1 filename
				

$ openssl dgst -sha1 /etc/passwd
SHA1(/etc/passwd)= 9d883a9d35fd9a6dc81e6a1717a8e2ecfc49cdd8
				

產生密鑰對

生成私鑰

openssl genrsa -out private.key 1024
			

根據私鑰產生公鑰

openssl rsa -in private.key -pubout > public.key
			

用公鑰加密明文

$ openssl rsautl -encrypt -pubin -inkey public.key -in filename -out filename.out
			

用私鑰解密

$ openssl rsautl -decrypt -inkey private.key -in filename.out -out filename
			

# create parameters in dsaparam.pem
openssl dsaparam -out dsaparam.pem 1024

# create first key
openssl gendsa -out key1.pem dsaparam.pem

# and second ...
openssl gendsa -out key2.pem dsaparam.pem
				

生成私鑰

openssl dsaparam -out dsaparam.pem 1024
openssl gendsa -out private.key dsaparam.pem
			

根據私鑰產生公鑰

openssl dsa -in private.key -pubout -out public.key
			

$ ls
dsaparam.pem  private.key  public.key

$ cat *
-----BEGIN DSA PARAMETERS-----
MIIBHgKBgQCAkvuZmbK7zgTv3WnYayypdghcNKA+jP7/fdwy82JfqkJeF38FOOu8
4cbrQjzs6XdANeZk3c6BVQfqNfFnUomKARm0gdqeelsmyHMV+0jy7fuX1HHIUZyJ
Rqravmh+o9iYX1aA3jsP5sDoosEEEYKQBAUEi6vwzCnjCra3TBuvmQIVAPYqwKI3
v6nkKAfn+lqPvmHqVDv5AoGAb7vilZ7EtuYpJbpURZtTPOtLpMmpfwXq+g7cKQ7Z
mC+TCwzVUkBv8s/gxwr7r92bCmGTGJGuBVGqI0yEbrkMRGieJwOrS885NNg+AiTW
DB0Xo2klaTg5rFydGxPvWI72cpyds69Ptm4z9Th0xrtDUNIYPdDIR+rVUao5XBS9
U4w=
-----END DSA PARAMETERS-----
-----BEGIN DSA PRIVATE KEY-----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-----END DSA PRIVATE KEY-----
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----
			

加密檔案

# openssl enc -e -rc4 -in in.txt -out out.txt
enter rc4 encryption password:
Verifying - enter rc4 encryption password:
			

解密檔案

# openssl enc -d -rc4 -in out.txt -out test.txt
enter rc4 decryption password:
			

使用 -k 指定密鑰

openssl enc -e -rc4 -k passwd -in in.txt -out out.txt
openssl enc -d -rc4 -k passwd -in out.txt -out test.txt
			

# openssl req -new -newkey rsa:2048 -config openssl.cfg -keyout server.key -nodes -out certreq.csr
			

# openssl req -new -newkey rsa:2048 -keyout server.key -nodes -subj /C=CN/O=example.com/OU=IT/CN=Neo/ST=GD/L=Shenzhen -out certreq.csr

C:\> openssl req -new -newkey rsa:2048 -config openssl.cfg -keyout server.key -nodes -subj /C=CN/O="%OrganizationName%"/OU="%OrganizationUnit%"/CN="%CommonName%"/ST="%StateName%"/L="%LocalityName%" -out certreq.csr

openssl req -x509 -nodes -days 365 -newkey rsa:4096 -keyout /etc/nginx/ssl/www.netkiller.cn.key -out /etc/nginx/ssl/www.netkiller.cn.crt -subj "/C=CN/ST=Guangdong/L=Shenzhen/O=Global Security/OU=IT Department/CN=www.netkiller.cn/emailAddress=netkiller@msn.com"

openssl req -x509 -nodes -days 365 -newkey rsa:4096 -keyout /etc/nginx/ssl/www.netkiller.cn.key -out /etc/nginx/ssl/www.netkiller.cn.crt -subj "/C=CN/ST=Guangdong/L=Shenzhen/O=Global Security/OU=IT Department/CN=*netkiller.cn/emailAddress=netkiller@msn.com"
			

生成隨機數

openssl rand 12 -base64			
			

# openssl rand -base64 24
rgphwqZFFA2tY1QfuBrmw3aN62i6ctFy			
			

$ openssl rsa -in neo.key -out nopassword.key
Enter pass phrase for neo.key:
writing RSA key