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Android签名相关知识整理

不止一次有用到Android签名相关的知识，每次都几乎从零开始在Google上搜索找，不想在继续这样了，找了个时间好好整理了一下自己用到的一些碎片知识，于是乎放到这里，一是备忘，二是帮助别人。

从APK文件中获取签名信息

使用方法

keytool -list -printcert -jarfile your_apk_file

输出信息

签名Owner,Issuer等信息
签名的fingerprints,如md5及sha1等值
签名有效期等信息

示例效果

16:29 $ keytool -list -printcert -jarfile akoi_1.2.apk Signer #1:  Signature:  Owner: CN=Andrew Wallace, OU=droidyue.com, O=droidyue.com, L=Beijing, ST=Beijing, C=86 Issuer: CN=Andrew Wallace, OU=droidyue.com, O=droidyue.com, L=Beijing, ST=Beijing, C=86 Serial number: 11a8a4a3 Valid from: Tue Feb 10 18:07:43 CST 2015 until: Sun Jun 13 18:07:43 CST 3013 Certificate fingerprints:    MD5:  46:C5:BE:EF:B5:C9:00:E1:FA:42:50:50:57:54:CA:15    SHA1: C1:14:5D:0A:C2:BF:F6:06:43:20:AE:2C:07:12:97:58:C2:1B:39:D1    SHA256: 0E:88:7D:C2:4C:D6:84:A7:58:D4:24:1E:9D:38:F9:05:98:1E:B2:A2:D7:CB:0F:81:74:60:5B:38:89:FF:21:1C    Signature algorithm name: SHA256withRSA    Version: 3

从签名文件中获取签名信息

使用方法

keytool -list -v -keystore your_kestore_file

注意，上述命令执行后，会提示输入密码，其实输入错误也没有关系，不影响结果。

输出信息

签名Owner,Issuer等信息
签名的fingerprints,如md5及sha1等值
签名有效期等信息

示例效果

Keystore type: JKS Keystore provider: SUN  Your keystore contains 1 entry  Alias name: droidyue.com Creation date: Feb 10, 2015 Entry type: PrivateKeyEntry Certificate chain length: 1 Certificate[1]: Owner: CN=Andrew Wallace, OU=droidyue.com, O=droidyue.com, L=Beijing, ST=Beijing, C=86 Issuer: CN=Andrew Wallace, OU=droidyue.com, O=droidyue.com, L=Beijing, ST=Beijing, C=86 Serial number: 11a8a4a3 Valid from: Tue Feb 10 18:07:43 CST 2015 until: Sun Jun 13 18:07:43 CST 3013 Certificate fingerprints:    MD5:  46:C5:BE:EF:B5:C9:00:E1:FA:42:50:50:57:54:CA:15    SHA1: C1:14:5D:0A:C2:BF:F6:06:43:20:AE:2C:07:12:97:58:C2:1B:39:D1    SHA256: 0E:88:7D:C2:4C:D6:84:A7:58:D4:24:1E:9D:38:F9:05:98:1E:B2:A2:D7:CB:0F:81:74:60:5B:38:89:FF:21:1C    Signature algorithm name: SHA256withRSA    Version: 3

重新签名APK

在没有源码情况下，我们就能对apk进行更换签名。

脚本

signapk.sh
备用地址

使用方法

bash signapk.sh your_apk_file your_keystore_file keystore_pass keystore_alias

示例效果

16:57 $ bash signapk.sh weixin6313android740.apk ~/Documents/baidu_disk/百度云同步盘/droidapp/mykiki 123456 droidyue.com param1 weixin6313android740.apk param2 /Users/androidyue/Documents/droidapp/mykiki param3 123456 param4 droidyue.com deleting: META-INF/MANIFEST.MF deleting: META-INF/DROIDYUE.SF deleting: META-INF/DROIDYUE.RSA    adding: META-INF/MANIFEST.MF    adding: META-INF/DROIDYUE.SF    adding: META-INF/DROIDYUE.RSA ...... Verification succesful

生成的文件会放在当前目录，其文件名相对输入文件，增加了 signed_ 前缀，比如对 weixin6313android740.apk 进行上述操作得到的输出文件是 signed_weixin6313android740.apk

Gradle build生成签名APK

想要在执行gradle build时生成指定签名的apk，需要在build.gradle中如下修改

android {      signingConfigs {         release {             storeFile file("myrelease.keystore")             storePassword "********"             keyAlias "******"             keyPassword "******"         }     }     buildTypes {         release {             signingConfig signingConfigs.release         }     } }