[本文参考] (http://blog.csdn.net/wed110/article/details/38303637)
**1、查看 keystore **
**$ keytool -list -keystore debug.keystore **
结果：
Keystore type: JKS
Keystore provider: SUN
Your keystore contains 1 entry
androiddebugkey, Mar 21, 2013, PrivateKeyEntry,
Certificate fingerprint (MD5): E0:F4:90:EE:CD:77:17:0E:B8:C4:AC:64:B2:F6:FC:83
2、查看三方应用或是系统应用签名用winrar打开待查看的apk，将其中META-INF文件夹解压出来，得到其中的CERT.RSA文件
$ keytool -printcert -file META-INF/CERT.RSA
结果：
Owner: CN=Android Debug, O=Android, C=US
Issuer: CN=Android Debug, O=Android, C=US
Serial number: 514ab2e1
Valid from: Thu Mar 21 15:12:33 CST 2013 until: Sat Mar 14 15:12:33 CST 2043
Certificate fingerprints:
MD5: E0:F4:90:EE:CD:77:17:0E:B8:C4:AC:64:B2:F6:FC:83
SHA1: 7F:E5:11:D8:37:4F:DA:D7:75:EA:A5:8C:47:06:85:95:6D:1D:3F:2B
Signature algorithm name: SHA1withRSA
Version: 3
3、给空白包签名
jarsigner -verbose -keystore [keystorePath] -signedjar [apkOut] [apkIn] [alias]
jarsigner命令格式：-verbose输出详细信息 -keystore密钥库位置 -signedjar要生成的文件 要签名的文件 密钥库文件
keystorePath参数代表keyStore的绝对路径，如D:\keystore
apkOut参数代表签名后的apk路径，如D:\signed.apk
apkin参数代表在腾讯应用中心下载的未签名apk，默认名称为tap_unsign.apk
alias参数代表签名用的alias名称（创建keyStore时所填写），如timdong
$ jarsigner -verbose -keystore debug.keystore -signedjar test2.apk tap_unsign1.apk timdong
Enter Passphrase for keystore:
adding: META-INF/MANIFEST.MF
adding: META-INF/ANDROIDD.SF
adding: META-INF/ANDROIDD.RSA
signing: res/drawable/ic_launcher.png
signing: res/layout/main.xml
signing: AndroidManifest.xml
signing: resources.arsc
signing: classes.dex
