Java实现SHA1加密代码实例

2023-09-10 06:21:05 175

/* *微信公众平台(JAVA)SDK * *Copyright(c)2016,AnsitechNetworkTechnologyCo.,LtdAllrightsreserved. *http://www.ansitech.com/weixin/sdk/ * *LicensedundertheApacheLicense,Version2.0(the"License"); *youmaynotusethisfileexceptincompliancewiththeLicense. *YoumayobtainacopyoftheLicenseat * *http://www.apache.org/licenses/LICENSE-2.0 * *Unlessrequiredbyapplicablelaworagreedtoinwriting,software *distributedundertheLicenseisdistributedonan"ASIS"BASIS, *WITHOUTWARRANTIESORCONDITIONSOFANYKIND,eitherexpressorimplied. *SeetheLicenseforthespecificlanguagegoverningpermissionsand *limitationsundertheLicense. */ packagecom.levi.utils; importjava.security.MessageDigest; /** *

Title:SHA1算法

* *@authorlevi */ publicfinalclassSHA1{ privatestaticfinalchar[]HEX_DIGITS={'0','1','2','3','4','5', '6','7','8','9','a','b','c','d','e','f'}; /** *Takestherawbytesfromthedigestandformatsthemcorrect. * *@parambytestherawbytesfromthedigest. *@returntheformattedbytes. */ privatestaticStringgetFormattedText(byte[]bytes){ intlen=bytes.length; StringBuilderbuf=newStringBuilder(len*2); //把密文转换成十六进制的字符串形式 for(intj=0;j>4)&0x0f]); buf.append(HEX_DIGITS[bytes[j]&0x0f]); } returnbuf.toString(); } publicstaticStringencode(Stringstr){ if(str==null){ returnnull; } try{ MessageDigestmessageDigest=MessageDigest.getInstance("SHA1"); messageDigest.update(str.getBytes()); returngetFormattedText(messageDigest.digest()); }catch(Exceptione){ thrownewRuntimeException(e); } } }

Java实现SHA1加密代码实例

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