md5sum

问题 I have to compare checksum of all files in /primary and /secondary folders in machineA with files in this folder /bat/snap/ which is in remote server machineB . The remote server will have lots of files along with the files we have in machineA . If there is any mismatch in checksum then I want to report all those files that have issues in machineA with full path and exit with non zero status code. If everything is matching then exit zero. I wrote one command (not sure whether there is any

问题 In Oracle SQL, is there an MD5 function or something available to me? I would like to do something like... select name, md5_sum( name ) from person; 回答1: See this Tahiti Link. Under MD5 Procedures and Functions it says These subprograms generate MD5 hashes of data. The MD5 algorithm ensures data integrity by generating a 128-bit cryptographic message digest value from given data. Also note, that DBMS_OBFUSCATION_TOOLKIT is deprecated and can/should be replaced with DBMS_CRYPTO , see this

问题 The common implementation for MD5 is given by RFC1321. Where the MD5Update function receive a pointer to chars . My architecture, a SHARC ADSP-21371, is not byte adressable which means: sizeof(int32_t) == 1 Thus I cannot really use this algorithm as is. I need to wrap some complexity to unpack each int32_t data. Is there an alternative solution that I can use out of the box and if possible compatible C99 or C11? 回答1: I finally implemented MD5 for a octet-addressable architecture, here is for

问题 Will changing a file name effect the MD5 Hash of a file? 回答1: Only if the file's name was included in the hash calculation. e.g., in pseudo-code: $hash1 = md5(contents of file); $hash2 = md5(name of file + contents of file); will produce two seperate hashes. 回答2: No, the hash is of the file contents only. You can see this in the source for md5sum and its MD5 implementation. You can also test this if you have access to md5sum : $ echo "some arbitrary content" > file1 $ cp file1 file2 $ md5sum

问题 I am having trouble generating a package with a md5sum of the contained files using Makefiles. I do have found an workaround, but I am not satisfied with it. This is a example of how my makefile works, it can be used to reproduce my problem with file1 , and my workaround with file2 . VERSION:=1 DIR:=tmp file: #rule to build the file with current version tag touch $(DIR)/file-$(VERSION) $(DIR)/file1.tar:file #rule that fails to create the md5 file cd $(DIR) md5sum -b \ file-$(VERSION) \ >>

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . I need to compare 5 files by their file paths: a,b,c,d,e and find duplicates if exists. How can I do this in c++ via md5sum comparison of files? 回答1: You'd need to compute a checksum for each file (write it yourself or call an external program), get hold of each file, ... This

问题 I am using Linux bash version 4.1.2 I have a tab-delimited input_file having 5 fields and I want to calculate the MD5 for each line and put the md5sum at the end of each line. The expected output_file should therefore has 6 fields for each line. Here is my coding: cat input_file | while read ONELINE do THEMD5=`echo "$ONELINE" | md5sum | awk '{print $1}'` echo -e "${ONELINE}\t${THEMD5}" done > output_file The coding works well most of the time. However, if ONELINE is ended with single/double

问题 DECLARE l_string NVARCHAR2(600) := '123456'; checksum NVARCHAR2(600); BEGIN DBMS_OUTPUT.DISABLE; DBMS_OUTPUT.ENABLE(1000000); DBMS_OBFUSCATION_TOOLKIT.md5 (input_string => l_string, checksum_string => checksum); DBMS_OUTPUT.PUT_LINE(RAWTONHEX(utl_raw.cast_to_raw(checksum))); END; Expected value: e10adc3949ba59abbe56e057f20f883e But it returns: FFFD00390049FFFD0059FFFDFFFD0056FFFD000FFFFD003E Note I want to maintain nvarchar2 datatype. The value from checksum variable gets stored in column

问题 All- We are working on migrating some confidential & regulatory information from Local UNIX file system to S3. The files are copied using AWS EC2 instance into S3 using "aws s3 cp--sse aws:kms --sse-kms-key-id....... " command. What i have noticed is the etag is different from the unix md5sum. It is exactly the same if i don't encrypt the data using kms keys. I need to validate the upload to make sure data is not corrupt while uploading to S3, how do i validate my file is intact as etag won't

问题 I need the MD5 sums of 3 million strings or so in a bash script on ubuntu. 3 million strings -> 3 million MD5 hashes. The trivial implementation takes about 0.005sec per string. That's over 4 hours. What faster alternatives exist? Is there a way to pump groups of strings into md5sum? #time md5sum running 100 times on short strings #each iteration is ~0.494s/100 = 0.005s time (for i in {0..99}; do md5sum <(echo $i); done) > /dev/null real 0m0.494s user 0m0.120s sys 0m0.356s A good solution