Private Signs
⚡ ALL INFORMATION CLICK HERE 👈🏻👈🏻👈🏻
Private Signs
Sign up with email
Sign up
Sign up with Google
Sign up with GitHub
Sign up with Facebook
Asked
9 years, 5 months ago
Active
1 year, 1 month ago
17.6k 16 16 gold badges 92 92 silver badges 140 140 bronze badges
11.1k 16 16 gold badges 69 69 silver badges 114 114 bronze badges
You can't sign anything with a public key.
– rczajka
Aug 28 '11 at 23:44
A public key can only be used to read the message, but you can't sign a new message with a public key. A private key can be used to sign the message.
– monksy
Aug 28 '11 at 23:59
The above two comments are actually not true (usually). Most often you can encrypt (and therefore sign) stuff with either key (private or public). This is how asymmetric encryption works. If Bob wants to send an encrypted message to Alice, he actually uses Alice's public key to encrypt his message and she will use her private key to decrypt. If he also wants to sign the message, he uses his private key to encrypt a hash of the message and Alice uses Bob's public key to decrypt that hash and verify it against the message received.
– StFS
Jun 16 '17 at 17:06
109 1 1 silver badge 15 15 bronze badges
5,643 22 22 silver badges 33 33 bronze badges
public static String sign (String plainText, PrivateKey privateKey) throws Exception {
Signature privateSignature = Signature.getInstance( "SHA256withRSA" );
privateSignature.initSign(privateKey);
privateSignature.update(plainText.getBytes(UTF_8));
byte [] signature = privateSignature.sign();
return Base64.getEncoder().encodeToString(signature);
}
public static boolean verify (String plainText, String signature, PublicKey publicKey) throws Exception {
Signature publicSignature = Signature.getInstance( "SHA256withRSA" );
publicSignature.initVerify(publicKey);
publicSignature.update(plainText.getBytes(UTF_8));
byte [] signatureBytes = Base64.getDecoder().decode(signature);
return publicSignature.verify(signatureBytes);
}
Hi Durga and welcome to SO. It is really nice to post code-snippets in an answer. Even better if you add a little bit of explanation to it. Thank you for your first contribution, though!
– fragmentedreality
Jan 2 '20 at 7:38
91 2 2 silver badges 6 6 bronze badges
public static String sign (String samlResponseString, String keystoreFile, String keyStorePassword, String privateKeyPassword, String alias)
throws NoSuchAlgorithmException, UnsupportedEncodingException,
InvalidKeyException, SignatureException {
PrivateKey pkey=getPrivateKey( keystoreFile, keyStorePassword, privateKeyPassword, alias);
String signedString = null ;
Signature signature = Signature.getInstance( "SHA256withRSA" );
signature.initSign(pkey);
signature.update(samlResponseString.getBytes());
byte [] signatureBytes = signature.sign();
byte [] encryptedByteValue = Base64.encodeBase64(signatureBytes);
signedString = new String(encryptedByteValue, "UTF-8" );
System.out.println(signedString);
return signedString;
}
5,422 11 11 gold badges 23 23 silver badges 46 46 bronze badges
669 6 6 silver badges 9 9 bronze badges
He is not asking how to encrypt data, he is asking how to sign data. encrypt != sign
– Diego Palomar
Aug 9 '17 at 10:51
Front-end / Full Stack web developer wanted for leading agriculture SaaS product
Senior Full Stack Developer (Cloud)
Senior RoR, Product Engineer London or remote (within EU time-zone)
Senior Full-Stack Developer (JavaScript) - 100% remote
Disy Informationssysteme GmbH No office location
Senior Fullstack Web Engineer (Contract)
Stack Overflow
Questions
Jobs
Developer Jobs Directory
Salary Calculator
Help
Mobile
Disable Responsiveness
Products
Teams
Talent
Advertising
Enterprise
Company
About
Press
Work Here
Legal
Privacy Policy
Terms of Service
Contact Us
Stack Exchange Network
Technology
Life / Arts
Culture / Recreation
Science
Other
Join Stack Overflow to learn, share knowledge, and build your career.
How can I get the signature of a string using SHA1withRSA if I already have the Private Key as byte[] or String ?
I guess what you say is you know the key pair before hand and want to sign/verify with that.
Here you need to change the method getKeyPair() to supply your known key pair. You may load it from a java key store [JKS].
You can't just have an arbitrary byte array either as your public key or private key. They should be generated in relation.
I use bouncy-castle to sign data and verify it.
Load RSA private or public key from a disk file into a Java object
First, we need to be able to load RSA private or public key from a disk file into a Java object of a proper class from Bouncy Castle
Creation of an RSA digital signature
Verification of an RSA digital signature
You first must create a public key from array of bytes
and after using the publicKey to encrypt
Now only who have the privateKey can read your data
@rczajka: a publicKey is a key. You can use it to sign somethig that only the owner (that have the privateKey) can read.
By clicking “Post Your Answer”, you agree to our terms of service , privacy policy and cookie policy
To subscribe to this RSS feed, copy and paste this URL into your RSS reader.
site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa . rev 2021.2.2.38474
10+ Best private property signs ideas | private property signs , signs ...
java - How to sign string with private key - Stack Overflow
Private sign Stock Vectors, Royalty Free Private sign ... | Depositphotos
Generating self- signed certificates on Windows | by Rory Braybrook | Medium
Private signs | Etsy
Стоковые векторы: лучшие изображения, картинки, рисунки по запросу Private sign
Лучший выбор Сортировать Лучший выбор Свежайшие Популярные
Любое время Последние 24 часа Последняя неделя Последний месяц Последний год
Горизонтальные Вертикальные Квадратные Панорамные
Только изолированные Исключить изолиров.
Только редакционные Не редакционные
Русский English Deutsch Français Español Русский Italiano Português Polski Nederlands 日本語 Česky Svenska 中文 Türkçe Español (Mexico) Ελληνικά 한국어 Português (Brasil) Magyar Українська Bahasa Indonesia ไทย Norsk Dansk Suomi
© 2009-2021. Корпорация Depositphotos, США. Все права защищены.
Masturbate Solo Xxx
Mature Clit
Granny Girls
Black Oral Sex
Small Girl Double Penetration
