• Gustav Simonsson's avatar
    Change keystore to version 3 · d23ec6c4
    Gustav Simonsson authored
    * Change password protection crypto in keystore to version 3
    * Update KeyStoreTests/basic_tests.json
    * Add support for PBKDF2 with HMAC-SHA256
    * Change MAC and encryption key to avoid unnecessary hashing
    * Add tests for test vectors in new wiki page defining version 3
    * Add tests for new keystore tests in ethereum/tests repo
    * Move JSON loading util to common for use in both tests and
      crypto packages
    * Add backwards compatibility with key store version 1
    d23ec6c4
test_utils.go 812 Bytes
package common

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
)

// LoadJSON reads the given file and unmarshals its content.
func LoadJSON(file string, val interface{}) error {
	content, err := ioutil.ReadFile(file)
	if err != nil {
		return err
	}
	if err := json.Unmarshal(content, val); err != nil {
		if syntaxerr, ok := err.(*json.SyntaxError); ok {
			line := findLine(content, syntaxerr.Offset)
			return fmt.Errorf("JSON syntax error at %v:%v: %v", file, line, err)
		}
		return fmt.Errorf("JSON unmarshal error in %v: %v", file, err)
	}
	return nil
}

// findLine returns the line number for the given offset into data.
func findLine(data []byte, offset int64) (line int) {
	line = 1
	for i, r := range string(data) {
		if int64(i) >= offset {
			return
		}
		if r == '\n' {
			line++
		}
	}
	return
}